To avoid bodily injury or damage to the server or its components, make sure you are familiar with the safety signs on the server chassis or its components.

Table 1 Safety signs

Sign	Description
	Circuit or electricity hazards are present. Only H3C authorized or professional server engineers are allowed to service, repair, or upgrade the server. WARNING! To avoid bodily injury or damage to circuits, do not open any components marked with the electrical hazard sign unless you have authorization to do so.
	Electrical hazards are present. Field servicing or repair is not allowed. WARNING! To avoid bodily injury, do not open any components with the field-servicing forbidden sign in any circumstances.
	The RJ-45 ports on the server can be used only for Ethernet connections. WARNING! To avoid electrical shocks, fire, or damage to the equipment, do not connect an RJ-45 port to a telephone.
	The surface or component might be hot and present burn hazards. WARNING! To avoid being burnt, allow hot surfaces or components to cool before touching them.
	The server or component is heavy and requires more than one people to carry or move. WARNING! To avoid bodily injury or damage to hardware, do not move a heavy component alone. In addition, observe local occupational health and safety requirements and guidelines for manual material handling.
	The server is powered by multiple power supplies. WARNING! To avoid bodily injury from electrical shocks, make sure you disconnect all power supplies if you are performing offline servicing.

Power source recommendations

Power instability or outage might cause data loss, service disruption, or damage to the server in the worst case.

To protect the server from unstable power or power outage, use uninterrupted power supplies (UPSs) to provide power for the server.

Installation safety recommendations

To avoid bodily injury or damage to the server, read the following information carefully before you operate the server.

General operating safety

To avoid bodily injury or damage to the server, follow these guidelines when you operate the server:

· Only H3C authorized or professional server engineers are allowed to install, service, repair, operate, or upgrade the server.

· Place the server on a clean, stable table or floor for servicing.

· Make sure all cables are correctly connected before you power on the server.

· To avoid being burnt, allow the server and its internal modules to cool before touching them.

If you put the server in standby mode (system power LED in amber) with the power on/standby button on the front panel, the power supplies continue to supply power to some circuits in the server. To remove all power for servicing safety, you must first press the button, wait for the system to enter standby mode, and then remove the power cords from the server.

To avoid bodily injury or damage to the server, follow these guidelines:

· Always use the power cords that came with the server.

· Do not use the power cords that came with the server for any other devices.

· Power off the server when installing or removing any components that are not hot swappable.

Rack mounting recommendations

To avoid bodily injury or damage to the equipment, follow these guidelines when you rack mount a server:

· Mount the server in a standard 19-inch rack.

· Make sure the leveling jacks are extended to the floor and the full weight of the rack rests on the leveling jacks.

· Couple the racks together in multi-rack installations.

· Load the rack from the bottom to the top, with the heaviest hardware unit at the bottom of the rack.

· Get help to lift and stabilize the server during installation or removal, especially when the server is not fastened to the rails. As a best practice, a minimum of two people are required to safely load or unload a rack. A third person might be required to help align the server if the server is installed higher than check level.

· For rack stability, make sure only one unit is extended at a time. A rack might get unstable if more than one server unit is extended.

· Make sure the rack is stable when you operate a server in the rack.

· To maintain correct airflow and avoid thermal damage to the server, use blank panels to fill empty rack units.

ESD prevention

Electrostatic charges that build up on people and tools might damage or shorten the lifespan of the system board and electrostatic-sensitive components.

Preventing electrostatic discharge

To prevent electrostatic damage, follow these guidelines:

· Transport or store the server with the components in antistatic bags.

· Keep the electrostatic-sensitive components in separate antistatic bags until they arrive at an ESD-protected area.

· Place the components on a grounded surface before removing them from their antistatic bags.

· Avoid touching pins, leads, or circuitry.

Grounding methods to prevent electrostatic discharge

The following are grounding methods that you can use to prevent electrostatic discharge:

· Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

· Take adequate personal grounding measures, including wearing antistatic clothing and static dissipative shoes.

· Use conductive field service tools.

· Use a portable field service kit with a folding static-dissipating work mat.

Cooling performance

Poor cooling performance might result from improper airflow and poor ventilation and might cause damage to the server.

To ensure good ventilation and proper airflow, follow these guidelines:

· Install blanks if the following module slots are empty:

¡ Drive bays.

¡ Fan bays.

¡ PCIe slots.

¡ Power supply slots.

· Do not block the ventilation openings in the server chassis.

· To avoid thermal damage to the server, do not operate the server for long periods in any of the following conditions:

¡ Access panel open or uninstalled.

¡ Air baffles uninstalled.

¡ PCIe slots, drive bays, fan bays, or power supply slots empty.

Battery safety

The server's system board contains a system battery, which is designed with a lifespan of 3 to 5 years.

If the server no longer automatically displays the correct date and time, you might need to replace the battery. When you replace the battery, follow these safety guidelines:

· Do not attempt to recharge the battery.

· Do not expose the battery to a temperature higher than 60°C (140°F).

· Do not disassemble, crush, puncture, short external contacts, or dispose of the battery in fire or water.

· Dispose of the battery at a designated facility. Do not throw the battery away together with other wastes.

Preparing for installation

Prepare a rack that meets the rack requirements and plan an installation site that meets the requirements for space and airflow, temperature, humidity, equipment room height, cleanliness, and grounding.

Rack requirements

Servers not installed with liquid-cooled modules

IMPORTANT:

To avoid affecting the server chassis, install power distribution units (PDUs) with the outputs facing backwards. If you install PDUs with the outputs facing the inside of the server, perform onsite survey to make sure the cables won't affect the server rear.

The server is 2U high and has a depth of 780 mm (30.71 in). The rack for installing the server must meet the following requirements:

· A standard 19-inch rack.

· A clearance of more than 50 mm (1.97 in) between the rack front posts and the front rack door.

· A minimum of 1200 mm (47.24 in) in depth as a best practice. For installation limits for different rack depth, see Table 2.

Table 2 Installation requirements for different rack depths

Rack depth	Installation requirements
1000 mm (39.37 in)	· The H3C cable management arm (CMA) is not supported. · A clearance of 60 mm (2.36 in) is reserved from the server rear to the rear rack door for cabling. · The slide rails and PDUs might hinder each other. Perform onsite survey to determine the PDU installation location and the proper PDUs. If the PDUs hinder the installation and movement of the slide rails anyway, use other methods to support the server, a tray for example.
1100 mm (43.31 in)	Make sure the CMA does not hinder PDU installation at the server rear before installing the CMA. If the CMA hinders PDU installation, use a deeper rack or change the installation locations of PDUs.
1200 mm (47.24 in)	Make sure the CMA does not hinder PDU installation or cabling. If the CMA hinders PDU installation or cabling, change the installation locations of PDUs. For detailed installation suggestions, see Figure 1.

Figure 1 Installation recommendations for a 1200 mm deep rack (top view)

(1) 1200 mm (47.24 in) rack depth
(2) A minimum of 50 mm (1.97 in) between the front rack posts and the front rack door
(3) 780 mm (30.71 in) between the front rack posts and the rear of the chassis, including power supply handles at the server rear (not shown in the figure)
(4) 800 mm (31.50 in) server depth, including chassis ears
(5) 960 mm (37.80 in) between the front rack posts and the CMA
(6) 860 mm (33.86 in) between the front rack posts and the rear ends of the slide rails

Servers installed with liquid-cooled modules

The server chassis has a height of 2U and a depth of 803 mm (31.61 in) (including chassis ears and quick connectors). For the requirements of a liquid-cooled system for the server, see Table 3. As a best practice, use H3C's cold plate-based liquid cooling system. For detailed information on the cold plate-based liquid cooling system, see the user guide for the cold plate-based liquid cooling system. The server can also be used independently of H3C cold plate-based liquid cooling system. Prior to usage, on-site surveying is required, for which you can contact technical support for further details.

Table 3 Server requirements for liquid cooling system

Item	Requirements
Server flow	≥ 1.4 L/min
Pressure difference between the inlet and outlet of the server.	≥ 45 Kpa
Supported inlet liquid temperature/CDU secondary side supply liquid temperature	5°C to 50°C (41°F to 122°F) Recommended: 40°C (104°F) NOTE: To prevent condensation, the minimum supply water temperature needs to be at least 3°C (37.4°F) higher than the dew point temperature. In general, a dew point hygrometer can be used to measure the dew point temperature.
Working pressure of the liquid cooling system	≤ 3.5 Bar Recommended: ≤ 2.5 Bar
Filtration precision of the secondary side	≤ 50 um

Installation site requirements

Airflow direction of the server

Figure 2 Airflow direction of the server

(1) and (2) Directions of the airflow into the chassis and power supply
(3) Directions of the airflow out of the power supply
(4) and (5) Direction of the airflow out of the chassis

Temperature and humidity requirements

To ensure correct operation of the server, make sure the room temperature and humidity meet the requirements as described in "Appendix A Server specifications."

Equipment room height requirements

To ensure correct operation of the server, make sure the equipment room height meets the requirements as described in "Appendix A Server specifications."

Corrosive gas concentration requirements

Corrosive gases can accelerate corrosion and aging of metal components and even cause server failure. Table 4 describes common corrosive gases and their sources.

Table 4 Common corrosive gases and their sources

Corrosive gas	Sources
Hydrogen sulfide (H2S)	Geothermal emissions, microbiological activities, fossil fuel processing, wood pulping, sewage treatment, combustion of fossil fuel, auto emissions, ore smelting, and sulfuric acid manufacture.
Sulfur dioxide (SO2) and sulfur trioxide (SO3)	Combustion of fossil fuel, auto emissions, ore smelting, sulfuric acid manufacture, and tobacco smoke.
Sulphur (S)	Foundries and sulfur manufacture.
Hydrogen Fluoride (HF)	Fertilizer manufacture, aluminum manufacture, ceramics manufacture, steel manufacture, electronics device manufacture, and fossil fuel.
Nitrogen Oxide (NOx)	Automobile emissions, fossil fuel combustion, microbes, and chemical industry.
Ammonia (NH3)	Microbes, sewage, fertilizer manufacture, geothermal steam, refrigeration equipment, cleaning products, and reproduction (blueprint) machines.
Carbonic oxide (CO)	Combustion, automobile emissions, microbes, trees, and wood pulping.
Chlorine (Cl2) and chlorine dioxide (ClO2)	Chlorine manufacture, aluminum manufacture, papermills, refuse decomposition, and cleaning products.
Hydrochloric acid (HCl)	Automobile emissions, combustion, oceanic processes, and polymer combustion.
Hydrobromic acid (HBr) and hydroiodic acid (HI)	Automobile emissions.
Ozone (O3)	Atmospheric photochemical processes mainly involving nitrogen oxides and oxygenated hydrocarbons, automotive emissions, and electrostatic filters.
Hydrocarbons (CnHn)	Automobile emissions, fossil fuel processing, tobacco smoke, water treatment, microbes, paper mill, and many other sources, both natural and industrial.

Requirements of corrosive gas concentration vary by server model. For information about the requirements, see the installation guide of the server.

Requirements for the data center equipment room

As a best practice, make sure the corrosive gas concentration for the data center equipment room meets the requirements of severity level G1 of ANSI/ISA 71.04-1985. The rate of copper corrosion product thickness growth must be less than 300 Å/month, and the rate of silver corrosion product thickness growth must be less than 200 Å/month. Angstrom (Å) is a metric unit of length equal to one ten-billionth of a meter.

To meet the copper and silver corrosion rates stated in severity level G1, make sure the corrosive gases in the equipment room do not exceed the concentration limits as shown in Table 5.

Table 5 Corrosive gas concentration limits in the data center equipment room

Corrosive gas	Concentration (ppb)	Remarks
H2S	< 3	CAUTION: The concentration limits are calculated based on the reaction results of the gases in the equipment room with a relative humidity less than 50%. If the relative humidity of the equipment room increases by 10%, the severity level of ANSI/ISA 71.04-1985 to be meet must also increase by 1.
SO2, SO3	< 10
Cl2	< 1
NOx	< 50
HF	< 1
NH3	< 500
O3	< 2

NOTE:

Part per billion (ppb) is a concentration unit. 1 ppb represents a volume-to-volume ratio of 1 to 100000000.

Requirements for the non-data center equipment room

The corrosive gas concentration for the non-data center equipment room must meet the requirements of class 3C2 of IEC 60721-3-3:2002, as shown in Table 6.

Table 6 Corrosive gas concentration limits in the non-data center equipment room

Gas	Average concentration (mg/m³)	Maximum concentration (mg/m³)
SO₂	0.3	1.0
H₂S	0.1	0.5
Cl₂	0.1	0.3
HCI	0.1	0.5
HF	0.01	0.03
NH₃	1.0	3.0
O₃	0.05	0.1
NO_X	0.5	1.0

CAUTION:

As a best practice, control the corrosive gas concentrations in the equipment room at their average values. Make sure the corrosive gas concentrations do not exceed 30 minutes per day at their maximum values.

Guidelines for controlling corrosive gases

To control corrosive gases, follow these guidelines:

· As a best practice, do not build the equipment room in a place with a high concentration of corrosive gases.

· Make sure the equipment room is not connected to sewer, sewage, vertical shaft, or septic tank pipelines and keep it far away from these pipelines. The air inlet of the equipment room must be away from such pollution sources.

· Use environmentally friendly materials to decorate the equipment room. Avoid using organic materials that contains harmful gases, such as sulfur or chlorine-containing insulation cottons, rubber mats, sound-proof cottons, and avoid using plasterboards with high sulfur concentration.

· Place fuel (diesel or gasoline) engines separately. Do not place them in the same equipment room with the device. Make sure the exhausted air of the engines will not flow into the equipment room or towards the air inlet of the air conditioners.

· Place batteries separately. Do not place them in the same room with the device.

· Employ a professional company to monitor and control corrosive gases in the equipment room regularly.

Cleanliness requirements

Requirements of dust particle concentration vary by server model. For information about the requirements, see the installation guide of the server.

Requirements for the data center equipment room

The concentration of dust participles in the equipment room must meet the ISO 8 cleanroom standard defined by ISO 14644-1, as described in Table 7. Make sure no zinc whiskers are in the equipment room.

Table 7 Dust particle concentration limit in the equipment room

Particle diameter	Concentration limit
≥ 5 µm	≤ 29300 particles/m³
≥ 1 µm	≤ 832000 particles/m³
≥ 0.5 µm	≤ 3520000 particles/m³

Requirements for the non-data center equipment room

The concentration of dust participles (particle diameter ≥ 0.5 µm) must meet the requirement of the GB 50174-2017 standard, which is less than 17600000 particles/m3.

Guidelines for controlling cleanliness

To maintain cleanliness in the equipment room, follow these guidelines:

· Keep the equipment room away from pollution sources and do not smoke or eat in the equipment room.

· Use double-layer glass in windows and seal doors and windows with dust-proof rubber strips.

· Use dustproof materials for floors, walls, and ceilings and use matt coating that does not produce powders.

· Keep the equipment room clean and clean the air filters of the rack regularly.

· Wear ESD clothing and shoe covers before entering the equipment room. Keep the ESD clothing and shoe covers clean and replace them frequently.

Grounding requirements

Correctly connecting the server grounding cable is crucial to lightning protection, anti-interference, and ESD prevention. The server can be grounded through the grounding wire of the power supply system and no external grounding cable is required.

Storage requirements

Follow these guidelines to store storage media:

· As a best practice, do not store an HDD for 6 months or more without powering on and using it.

· As a best practice, do not store an SSD, M.2 SSD, or SD card for 3 months or more without powering on and using it. Long unused time increases data loss risks.

· To store the server chassis, or an HDD and SSD for 3 months or more, power on it every 3 months and run it for a minimum of 2 hours each time. For information about powering on and powering off the server, see "Powering on and powering off the server."

Installation tools

Table 8 lists the tools that you might use during installation.

Table 8 Installation tools

Picture	Name	Description
	T25 Torx screwdriver	Installs or removes screws inside chassis ears. A flat-head screwdriver can also be used for this purpose.
	T30 Torx screwdriver	Installs or removes captive screws on processor heatsinks.
	T15 Torx screwdriver (shipped with the server)	Installs or removes screws on the system board.
	T10 Torx screwdriver (shipped with the server)	Installs or removes screws on riser cards.
	Flat-head screwdriver	Installs or removes captive screws inside multifunctional rack mount ears or replaces system batteries.
	Phillips screwdriver	Installs or removes screws on drive carriers.
	Cage nut insertion/extraction tool	Inserts or extracts the cage nuts in rack posts.
	Diagonal pliers	Clips insulating sleeves.
	Tape measure	Measures distance.
	Multimeter	Measures resistance and voltage.
	ESD wrist strap	Prevents ESD when you operate the server.
	Antistatic gloves	Prevents ESD when you operate the server.
	Antistatic clothing	Prevents ESD when you operate the server.
	Ladder	Supports high-place operations.
	Interface cable (such as an Ethernet cable or optical fiber)	Connects the server to an external network.
	Serial console cable	Connects the serial connector on the server to a monitor for troubleshooting.
	Type-C to USB adapter cable, used to connect USB Wi-Fi module or USB flash drive	· When using an external third-party USB Wi-Fi module, you can access the HDM interface through the HDM Mobile client on a mobile device. · When connecting a USB flash drive, you can download SDS logs to the USB drive from the HDM interface. NOTE: Support for USB Wi-Fi modules depends on the server model.
	Monitor	Displays the output from the server.
	Temperature and humidity meter	Displays current temperature and humidity.
	Oscilloscope	Displays the variation of voltage over time in waveforms.

Installing or removing the server

Installing the server

Installing rails

Install the inner rails to the server and the outer rails to the rack. For information about installing the rails, see the document shipped with the rails.

Rack-mounting the server

1. Slide the server into the rack. For more information about how to slide the server into the rack, see the installation guide for the rails.

Figure 3 Rack-mounting the server

2. Secure the server.

a. Push the server until the multifunctional rack mount ears are flush against the rack front posts, as shown by callout 1 in Figure 4.

b. Unlock the latches of the multifunctional rack mount ears, as shown by callout 2 in Figure 4.

c. Fasten the captive screws inside the chassis ears and lock the latches, as shown by callout 3 in Figure 4.

Figure 4 Securing the server

Installing cable management brackets

Install cable management brackets if the server is shipped with cable management brackets. For information about how to install cable management brackets, see the installation guide shipped with the brackets.

Connecting external cables

Cabling guidelines

WARNING!

To avoid electric shock, fire, or damage to the equipment, do not connect communication equipment to RJ-45 Ethernet ports on the server.

· For heat dissipation, make sure no cables block the inlet or outlet air vents of the server.

· To easily identify ports and connect/disconnect cables, make sure the cables do not cross.

· Label the cables for easy identification of the cables.

· Wrap unused cables onto an appropriate position on the rack.

· To avoid damage to cables when extending the server out of the rack, do not route the cables too tight if you use cable management brackets.

Connecting a mouse, keyboard, and monitor

About this task

Perform this task before you configure BIOS, HDM, FIST, or RAID on the server or enter the operating system of the server.

NOTE:

The operating systems supported by the server come with a built-in VGA driver by default. If a higher display resolution is required, update the built-in VGA driver. To obtain the new VGA driver, access the H3C official website, select Software Download > Servers, and enter "VGA" in the search box.

The server provides two DB15 VGA connectors for connecting a monitor. One is on the front panel and the other is on the rear panel.

The server is not shipped with a standard PS2 mouse and keyboard. To connect a PS2 mouse and keyboard, you must prepare a USB-to-PS2 adapter.

Procedure

1. Connect one plug of a VGA cable to a VGA connector on the server, and fasten the screws on the plug.

Figure 5 Connecting a VGA cable

2. Connect the other plug of the VGA cable to the VGA connector on the monitor, and fasten the screws on the plug.

3. Connect the mouse and keyboard.

¡ For a USB mouse and keyboard, directly connect the USB connectors of the mouse and keyboard to the USB connectors on the server.

¡ For a PS2 mouse and keyboard, insert the USB connector of the USB-to-PS2 adapter to a USB connector on the server. Then, insert the PS2 connectors of the mouse and keyboard into the PS2 receptacles of the adapter.

Figure 6 Connecting a PS2 mouse and keyboard by using a USB-to-PS2 adapter

Connecting an Ethernet cable

About this task

Perform this task before you set up a network environment or log in to the HDM management interface through the HDM network port to manage the server.

Procedure

1. Determine the network port on the server.

¡ To connect the server to the external network, use the Ethernet port on the network adapter.

¡ To log in to the HDM management interface, use the HDM dedicated network port. For the location of the HDM dedicated network port, see "Rear panel."

If the server is configured with an OCP network adapter, you can also use the HDM shared network port on the OCP network adapter to log in to the HDM management interface. For the location of the OCP network adapter, see "Rear panel."

2. Determine type of the Ethernet cable.

Verify the connectivity of the cable by using a link tester.

If you are replacing the Ethernet cable, make sure the new cable is the same type or compatible with the old cable.

3. Label the Ethernet cable by filling in the names and numbers of the server and the peer device on the label.

As a best practice, use labels of the same kind for all cables.

If you are replacing the Ethernet cable, label the new cable with the same number as the number of the old cable.

4. Connect one end of the Ethernet cable to the network port on the server and the other end to the peer device.

Figure 7 Connecting an Ethernet cable

5. Verify network connectivity.

After powering on the server, use the ping command to test the network connectivity. If the connection between the server and the peer device fails, verify that the Ethernet cable is securely connected.

6. Secure the Ethernet cable. For information about how to secure cables, see "Securing cables."

Connecting the power cord

Guidelines

WARNING!

To avoid damage to the equipment or even bodily injury, use the power cord that ships with the server.

Before connecting the power cord, make sure the server and components are installed correctly.

Procedure

1. Insert the power cord plug into the power receptacle of a power supply at the rear panel, as shown in Figure 8.

Figure 8 Connecting the power cord

2. Connect the other end of the power cord to the power source, for example, the power strip on the rack.

3. Secure the power cord to avoid unexpected disconnection of the power cord.

Multiple types of wire fasteners can be used for securing the power cord. In this procedure, a cable clamp is used.

a. If the cable clamp is positioned too near the power cord that it blocks the power cord plug connection, press down the tab on the cable mount and slide the clip backward.

Figure 9 Sliding the cable clamp backward

b. Open the cable clamp, place the power cord through the opening in the cable clamp, and then close the cable clamp, as shown by callouts 1, 2, 3, and 4 in Figure 10.

Figure 10 Securing the AC power cord

c. Slide the cable clamp forward until it is flush against the edge of the power cord plug, as shown in Figure 11.

Figure 11 Sliding the cable clamp forward

Securing cables

Securing cables to cable management brackets

For information about how to secure cables to cable management brackets, see the installation guide shipped with the brackets.

Securing cables to slide rails by using cable straps

You can secure cables to either left slide rails or right slide rails. As a best practice for cable management, secure cables to left slide rails.

When multiple cable straps are used in the same rack, stagger the strap location, so that the straps are adjacent to each other when viewed from top to bottom. This positioning will enable the slide rails to slide easily in and out of the rack.

To secure cables to slide rails by using cable straps:

1. Hold the cables against a slide rail.

2. Wrap the strap around the slide rail and loop the end of the cable strap through the buckle.

3. Dress the cable strap to ensure that the extra length and buckle part of the strap are facing outside of the slide rail.

Figure 12 Securing cables to a slide rail

Removing the server from a rack

1. Power off the server. For more information, see "Powering off the server."

2. Disconnect all peripheral cables from the server.

3. Extend the server from the rack.

a. Open the latches of the multifunctional rack mount ears, as shown by callout 1 in Figure 13.

b. Loosen the captive screws inside the multifunctional rack mount ears, as shown by callout 2 in Figure 13.

c. Slide the server out of the rack, as shown by callout 3 in Figure 13.

Figure 13 Extending the server from the rack

4. Place the server on a clean, stable surface.

Powering on and powering off the server

Important information

If the server is connected to external storage devices, make sure the server is the first device to power off and then the last device to power on. This restriction prevents the server from mistakenly identifying the external storage devices as faulty devices.

Powering on the server

Prerequisites

Before you power on the server, you must complete the following tasks:

· Install the server and internal components correctly.

· Connect the server to a power source.

Procedure

Powering on the server by pressing the power on/standby button

Press the power on/standby button to power on the server.

The server exits standby mode and supplies power to the system. The system power LED changes from steady amber to flashing green and then to steady green. For information about the position of the system power LED, see "LEDs and buttons."

Powering on the server from the HDM Web interface

1. Log in to HDM.

For information about how to log in to HDM, see the HDM2 user guide for the server.

2. Power on the server.

a. Select System > Power Management.

b. Click Power on.

For more information, see HDM online help.

Powering on the server from the remote console interface

1. Log in to HDM.

For information about how to log in to HDM, see the HDM2 user guide for the server.

2. Log in to a remote console and then power on the server.

For information, see HDM2 online help.

Configuring automatic power-on

You can configure automatic power-on from HDM or the BIOS.

To configure automatic power-on from HDM:

1. Log in to HDM.

For information about how to log in to HDM, see the HDM2 user guide for the server.

2. Configure automatic power-on for the server.

a. Select System > Power Management.

b. In the System power restore area, select Always power on, and then click OK.

To configure automatic power-on from the BIOS:

1. Log in to the BIOS.

For information about how to log in to the BIOS, see the BIOS user guide for the server.

2. Configure automatic power-on for the server.

a. Select Server > AC Restore Settings, and then press Enter.

b. Select Always Power On, and then press Enter.

c. Press F4 to save the configuration.

For more information, see the BIOS user guide for the server.

Powering off the server

Guidelines

Before powering off the server, you must complete the following tasks:

· Back up all critical data.

· Make sure all services have stopped or have been migrated to other servers.

Procedure

Powering off the server from its operating system

1. Connect a monitor, mouse, and keyboard to the server.

2. Shut down the operating system of the server.

3. Disconnect all power cords from the server.

Powering off the server by pressing the power on/standby button

1. Press the power on/standby button and wait for the system power LED to turn into steady amber.

2. Disconnect all power cords from the server.

Powering off the server forcedly by pressing the power on/standby button

IMPORTANT:

This method forces the server to enter standby mode without properly exiting applications and the operating system. Use this method only when the server system crashes. For example, a process gets stuck.

1. Press and hold the power on/standby button until the system power LED turns into steady amber.

2. Disconnect all power cords from the server.

Powering off the server from the HDM Web interface

1. Log in to HDM.

For information about how to log in to HDM, see the HDM2 user guide for the server.

2. Power off the server.

a. Select System > Power Management.

b. Click Graceful power-off.

3. Disconnect all power cords from the server.

Powering off the server from the remote console interface

1. Log in to HDM.

For information about how to log in to HDM, see the HDM2 user guide for the server.

2. Log in to a remote console and then power off the server.

For information about how to log in to a remote console, see HDM online help.

3. Disconnect all power cords from the server.

Configuring the server

The following information describes the procedures to configure the server after the server installation is complete.

Configuration flowchart

Figure 14 Configuration flowchart

Powering on the server

1. Power on the server. For information about the procedures, see "Powering on the server."

2. Verify that the health LED on the front panel is steady green, which indicates that the system is operating correctly. For more information about the health LED status, see "LEDs and buttons."

Configuring basic BIOS settings

You can set the server boot order and the BIOS passwords from the BIOS setup utility of the server.

NOTE:

The BIOS setup utility screens are subject to change without notice.

Setting the server boot order

The server has a default boot order. You can change the server boot order from the BIOS. For the default boot order and the procedure of changing the server boot order, see the BIOS user guide for the server.

Setting the BIOS passwords

BIOS passwords include a boot password as well as an administrator password and a user password for the BIOS setup utility. By default, no passwords are set.

To prevent unauthorized access and changes to the BIOS settings, set both the administrator and user passwords for accessing the BIOS setup utility. Make sure the two passwords are different.

After setting the administrator password and user password for the BIOS setup utility, you must enter the administrator password or user password each time you access the system.

· To obtain administrator privileges, enter the administrator password.

· To obtain the user privileges, enter the user password.

For the difference between the administrator and user privileges and guidelines for setting the BIOS passwords, see the BIOS user guide for the server.

Configuring RAID

The embedded SATA storage controller or NVMe storage controller on the server do not support RAID configuration.

Configure physical and logical drives (RAID arrays) for the server.

The supported RAID levels and RAID configuration methods vary by storage controller model. For more information, see the storage controller user guide for the server.

Installing the operating system and hardware drivers

Installing the operating system

Install a compatible operating system on the server by following the procedures described in the operating system installation guide for the server.

For the server compatibility with the operating systems, visit the component compatibility lookup tool at http://www.h3c.com/en/home/qr/default.htm?id=66.

Installing hardware drivers

IMPORTANT:

To avoid hardware unavailability caused by an update failure, always back up the drivers before you update them.

For newly installed hardware to operate correctly, the operating system must have the required hardware drivers.

To install a hardware driver, see the operating system installation guide for the server.

Updating firmware

IMPORTANT:

Verify the hardware and software compatibility before firmware upgrade. For information about the hardware and software compatibility, see the software release notes.

You can update the following firmware from FIST or HDM:

· HDM.

· BIOS.

· CPLD.

· BPCPLD.

· PSU.

For information about the update procedures, see the firmware update guide for the server.

Replacing hardware options

If you are replacing multiple hardware options, read their replacement procedures and identify similar steps to streamline the entire replacement procedure.

When you remove the access panel for the first time, remove the screws at the two sides of the chassis rear.

Replacing a processor

WARNING!

To avoid bodily injury from hot surfaces, allow the server and its internal modules to cool before touching them.

Processor installation guidelines

· The server supports two processors.

· To avoid damage to a processor or the system board, only H3C authorized or professional server engineers can install, replace, or remove a processor.

· Make sure the processors on the server are the same model.

· The pins in the processor sockets are very fragile and prone to damage. Install a protective cover if a processor socket is empty.

· For the server to operate correctly, make sure processor 1 is in position. For more information about processor locations, see "System board components."

· You must paste the barcode label shipped with the processor to the side of the heatsink to cover the original barcode label on the heatsink. This ensures that H3C will provide the warranty service for the processor.

· To prevent burns due to high temperatures of the processor heatsink or processor liquid cooling module during the disassembly process, make sure proper thermal protection is taken before performing any operations.

Prerequisites

Take the following ESD prevention measures:

· Wear antistatic clothing.

· Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

· Do not wear any conductive objects, such as jewelry or watches.

· When you replace a component, examine the slot and connector for damages. Make sure the pins are not damaged (bent for example) and do not contain any foreign objects.

Removing a processor

1. Power off the server. For more information, see "Powering off the server."

2. Remove the server from the rack. For more information, see "Removing the server from a rack."

3. Remove the access panel:

a. Press the button on the locking lever and then lift the locking lever.

The access panel automatically slides to the server rear.

b. Lift the access panel to remove it from the server.

4. (Optional.) Remove the rear 4GPU module.

5. Remove the chassis air baffle. Open the blue clip on the air baffle and lift the air baffle out of the chassis.

6. Remove the processor heatsink:

a. Loosen the captive screws strictly in the sequence of 6 to 1 that are labeled on the processor. An incorrect sequence might cause the captive screws to fall off.

b. Lift the heatsink slowly to remove it.

7. Use isopropanol wiping cloth to clear the residual thermal grease from the processor top and heatsink. Make sure the processor and the heatsink are clean.

8. Open the processor cover. Use a T20 Torx screwdriver to loosen the screw on the processor cover. Then, the processor cover automatically pops out.

9. Open the processor frame. Use your index fingers to hold the metal handles to pull up the processor frame until you cannot pull it further.

10. Remove the processor. Pinch the protruding part of the processor carrier to pull it out.

CAUTION:

To avoid component damage, do not drop the processor carrier with the processor or touch the surface of the processor.

Installing a processor

1. Install the processor carrier with the processor. Pinching the protruding part of the processor carrier, insert it into the processor frame to secure it into place.

CAUTION:

To avoid component damage, do not drop the processor carrier with the processor or touch the surface of the processor.

2. Close the processor frame. Close the processor frame slowly, and then hold both sides of the frame with your hands until it locks in place.

3. Secure the processor cover. Close the processor cover slowly and use a T20 Torx screwdriver to fasten the screw.

4. Smear thermal grease onto the processor:

a. Clean the heatsink. Make sure no thermal grease remains on the heatsink top.

b. Use the thermal grease injector to inject 0.6 ml of thermal grease to the five dots on the bottom of the heatsink, 0.12 ml for each dot.

5. Install the heatsink.

a. Place the heatsink down onto the processor socket.

b. (Optional.) If the heatsink is a Y-shape heatsink, align the pillars at the horns of the heatsink with the white dots on the system board to identify the installation location.

c. Use a T20 Torx screwdriver to fasten the captive screws on the heatsink strictly in the sequence of 1 to 6 that are labeled on the heatsink. An incorrect sequence might cause the captive screws to fall off.

CAUTION:

To avoid poor contact between the processor and the system board or damage to the pins in the processor socket, tighten the screws to a torque of 1.6 N·m (16.1 kgf.cm).

6. Paste bar code label supplied with the processor over the original label on the heatsink.

IMPORTANT:

This step is required for you to obtain H3C's processor servicing.

7. Install the chassis air baffle.

8. (Optional.) Install the rear 4GPU module.

9. Install the access panel:

a. Place the access panel onto the server.

b. Slide the access panel to the server front and close the locking lever. The access panel snaps into place.

10. Rack-mount the server. For more information, see "Rack-mounting the server."

11. Connect the power cord. For more information, see "Connecting the power cord."

12. Power on the server. For more information, see "Powering on the server."

Replacing the liquid-cooled module

Prerequisites

Take the following ESD prevention measures:

· Wear antistatic clothing.

· Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

· Do not wear any conductive objects, such as jewelry or watches.

· When you replace a component, examine the slot and connector for damages. Make sure the pins are not damaged (bent for example) and do not contain any foreign objects.

Procedure

CAUTION:

· To avoid damaging the processor or system board, only H3C authorized personnel or professional server engineers are allowed to replace the liquid-cooled module.

· To prevent static electricity damage to electronic components, wear an antistatic wrist strap before operation, and make sure the other end of the wrist strap is properly grounded.

Replacing a liquid-cooled module

1. Power off the server. For more information, see "Powering off the server."

2. Turn off the switch of the liquid-cooled device, unplug the liquid-cooled adapter between the cabinet and the server (handle with caution to avoid coolant leakage), and disconnect the power and network connections between the server and the cabinet.

3. Remove the server from the rack. For more information, see "Removing the server from a rack."

4. Remove the access panel:

a. Press the button on the locking lever and then lift the locking lever.

The access panel automatically slides to the server rear.

b. Lift the access panel to remove it from the server.

5. Remove the chassis air baffle. Open the blue clip on the air baffle and lift the air baffle out of the chassis.

6. Remove the fan cage. Pull up the ejector levers at both sides of the fan cage and lift the fan cage to remove it from the chassis.

7. Remove the liquid-cooled module.

a. Disconnect the leak detection sensor cable.

b. Remove the air baffle on the cold plate. Remove the two screws used to secure the baffle, take off the baffle, and then reattach the two screws to the cold plate.

c. Carefully loosen the screws on the heatsink of the liquid-cooled module in the order indicated by the labels 6 to 1 on the surface of the module. Incorrect order may result in screw detachment.

d. Loosen the screws that secure the liquid-cooled pipe clamp to the back of the chassis.

e. Slowly lift the liquid cooling module upward to detach it from the server, and place the module upside down on an antistatic platform.

8. Clean off any remaining thermal grease. Use isopropyl alcohol and a clean cloth to wipe the top of the CPU and the surface of the liquid cooling module, making sure the surfaces are clean and free from any residue.

Installing a liquid-cooled module

1. Take the liquid-cooled module out of the antistatic bag.

2. (Optional.) Apply thermal grease onto the liquid-cooled module. Using a thermal grease syringe, squeeze out 0.6 ml of thermal grease, and then use the five dot method to evenly spread the thermal grease onto the surface of the liquid cooling module.

CAUTION:

The new liquid-cooled module comes with its own thermal grease. If the thermal grease on it is damaged, you must clean the thermal grease thoroughly and then re-applied with fresh thermal grease.

3. Attach the liquid-cooled module to the server.

a. Place the liquid-cooled module downwards onto the CPU socket.

b. Using a T20 Torx screwdriver, tighten the screws on the heatsink of the liquid-cooled module in the order indicated by the labels 1 to 6. It is important to strictly follow this order to prevent the screws from detaching.

c. Install the baffle on the cold plate. Remove the two screws on the cold plate, align the two screw holes on the baffle with the screw holes on the cold plate, and tighten the two screws to secure the baffle.

d. Install the leak detection sensor cable.

e. Install the screws that secure the liquid-cooled pipe clamp to the back of the chassis, ensuring the proper alignment between the clamp and the chassis.

CAUTION:

Make sure the leak detection sensor cable is properly plugged in, as otherwise it may affect the overall cooling performance of the system.

4. Install the fan cage. Place the fan cage into the chassis and close the ejector levers.

5. Install the chassis air baffle.

6. Install the access panel:

a. Place the access panel onto the server.

b. Slide the access panel to the server front and close the locking lever. The access panel snaps into place.

7. Rack-mount the server. For more information, see "Rack-mounting the server."

8. Connect the inlet and outlet ports of the liquid-cooled module to the cabinet.

9. Connect the power cord.

10. Power on the server. For more information, see "Powering on the server."

Verifying the replacement

Log in to the HDM Web interface and check if the processor is functioning normally after replacing the liquid-cooled module. For detailed instructions, see the HDM2 online help.

Replacing a DIMM

WARNING!

To avoid bodily injury from hot surfaces, allow the server and its internal modules to cool before touching them.

About DIMMs

DDR5 DIMMs can perform parity check on addresses and the DDR5 DIMMs cannot protect data from getting lost in case of unexpected system power outage.

Guidelines

The server provides 12 DIMM channels per processor and each channel has one DIMM slot. If the server has one processor, the total number of DIMM slots is 12. If the server has two processors, the total number of DIMM slots is 24.

When you install a DIMM, use Table 9 to verify that it is compatible with the processors.

Table 9 DIMM and processor compatibility

Processor	Memory type @ frequency	Remarks
AMD Genoa EYPC	DDR5 @4800MHz	N/A
AMD Bergamo EYPC	DDR5 @4800MHz	N/A

DIMM frequency

You can query the memory frequency by selecting Memory Module and query the maximum supported memory frequency by selecting Processor.

To obtain the memory frequency and maximum memory frequency supported by a specific processor, use the component compatibility lookup tool at http://www.h3c.com/en/home/qr/default.htm?id=66. You can query the memory frequency by selecting Memory Module and query the maximum supported memory frequency by selecting Processor.

The actual operating memory frequency is equal to the lesser of the memory frequency or the maximum memory frequency supported by the processors. For example, if the memory frequency is 4400 MHz and the maximum memory frequency supported by processors is 4800 MHz, the actual operating memory frequency is 4400 MHz.

Installation guidelines

· As a best practice, use consistent memory configuration for processors. Follow the DIMM installation guidelines for configuration.

· As a best practice, install DDR4 DIMMs that have the same product code and DIMM specification (type, capacity, rank, and frequency). To install components or replace faulty DIMMs of other specifications, contact Technical Support.

· For the configured memory mode to take effect, make sure the following installation requirements are met:

Figure 15 DIMM population schemes for two processors

NOTE:

"√" in this figure represents a recommended DIMM installation scheme. "*" represents a not-recommended DIMM installation scheme.

Prerequisites

Take the following ESD prevention measures:

· Wear antistatic clothing.

· Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

· Do not wear any conductive objects, such as jewelry or watches.

When you replace a component, examine the slot and connector for damages. Make sure the pins are not damaged (bent for example) and do not contain any foreign objects.

Removing a DIMM

1. Power off the server. For more information, see "Powering off the server."

2. Remove the server from the rack. For more information, see "Removing the server from a rack."

3. Remove the access panel:

a. Press the button on the locking lever and then lift the locking lever.

The access panel automatically slides to the server rear.

b. Lift the access panel to remove it from the server.

4. (Optional.) Remove the rear 4GPU module.

5. Remove the chassis air baffle. Open the blue clip on the air baffle and lift the air baffle out of the chassis.

6. Remove a DIMM. Open the DIMM slot latches and pull the DIMM out of the slot to remove the DIMM.

CAUTION:

To avoid damage to DIMMs or the system board, make sure the server has been powered off and disconnected from the power cord for at least 20 seconds.

Installing a DIMM

1. Install the DIMM. Align the notch on the DIMM with the connector key in the DIMM slot and press the DIMM into the socket until the latches lock the DIMM in place.

2. Install the chassis air baffle.

3. (Optional.) Install the rear 4GPU module.

4. Install the access panel:

a. Place the access panel onto the server.

b. Slide the access panel to the server front and close the locking lever. The access panel snaps into place.

5. Rack-mount the server. For more information, see "Rack-mounting the server."

6. Connect the power cord. For more information, see "Connecting the power cord."

7. Power on the server. For more information, see "Powering on the server."

8. (Optional.) To modify the memory mode, enter the BIOS and configure the memory mode as described in the BIOS user manual for the server.

Verifying the replacement

Use one of the following methods to verify that the DIMM is installed correctly:

· Using the operating system:

¡ In Windows, select Run in the Start menu, enter msinfo32, and verify the memory capacity of the DIMM.

¡ In Linux, execute the cat /proc/meminfo command to verify the memory capacity.

· Using HDM:

· Using BIOS:

Access the BIOS, select Advanced > Socket Configuration > Memory Configuration > Memory Topology, and press Enter. Then, verify the memory capacity of the DIMM.

If the memory capacity displayed is inconsistent with the actual capacity, remove and then reinstall the DIMM, or replace the DIMM with a new DIMM.

If the DIMM is in Mirror mode, it is normal that the displayed capacity is smaller than the actual capacity.

Replacing the system board

Guidelines

WARNING!

To avoid bodily injury from hot surfaces, allow the server and its internal modules to cool before touching them.

To prevent electrostatic discharge, place the removed parts on an antistatic surface or in antistatic bags.

Prerequisites

Take the following ESD prevention measures:

· Wear antistatic clothing.

· Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

· Do not wear any conductive objects, such as jewelry or watches.

When you replace a component, examine the slot and connector for damages. Make sure the pins are not damaged (bent for example) and do not contain any foreign objects.

Removing the system board

1. Power off the server. For more information, see "Powering off the server."

2. Remove the server from the rack. For more information, see "Removing the server from a rack."

3. Remove the access panel:

a. Press the button on the locking lever and then lift the locking lever.

The access panel automatically slides to the server rear.

b. Lift the access panel to remove it from the server.

4. Remove riser cards.

5. Remove the serial & DSD module.

6. Remove the power supplies.

7. Remove the chassis air baffle. Open the blue clip on the air baffle, and lift the air baffle out of the chassis.

8. Remove the fan module.

9. Remove the fan cage. Pull up the ejector levers at both sides of the fan cage and lift the fan cage to remove it from the chassis.

10. Remove all the DIMMs installed on the system board.

11. Remove the heatsinks.

12. Remove processors.

13. Install protective covers over the empty processor sockets.

14. Disconnect cables from the system board.

15. Remove the system board:

a. Loosen the captive screws on the system board.

b. Hold the system board handle and slide the system board toward the server front to disengage the system board from the server management module. Then, lift the system board out of the chassis.

Installing the system board

1. Install the system board:

a. Slowly place the system board in the chassis. Then, hold the system board handle and slide the system board toward the server rear until the server management module connectors are successfully attached to the system board.

NOTE:

The system board is securely seated if you cannot use the system board handle to lift the system board.

b. Fasten the captive screws on the system board.

2. Remove the installed protective covers over the processor sockets.

3. Install processors.

4. Connect cables to the system board.

5. Install heatsinks.

6. Install DIMMs.

7. Install the fan cage and fan modules.

8. Install the chassis air baffle.

9. Install the removed power supplies.

10. Install the serial & DSD module.

11. Install riser cards and connect cables to riser cards.

12. Install the access panel.

13. Rack-mount the server. For more information, see "Rack-mounting the server."

14. Connect the power cord. For more information, see "Connecting the power cord."

15. Power on the server. For more information, see "Powering on the server."

Replacing the server management module

Prerequisites

Take the following ESD prevention measures:

· Wear antistatic clothing.

· Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

· Do not wear any conductive objects, such as jewelry or watches.

When you replace a component, examine the slot and connector for damages. Make sure the pins are not damaged (bent for example) and do not contain any foreign objects.

Removing the server management module

1. Power off the server. For more information, see "Powering off the server."

2. Remove the server from the rack. For more information, see "Removing the server from a rack."

3. Remove the access panel:

a. Press the button on the locking lever and then lift the locking lever.

The access panel automatically slides to the server rear.

b. Lift the access panel to remove it from the server.

4. Remove riser cards.

5. Remove the serial & DSD module.

6. Remove all the power supplies.

7. Remove the chassis air baffle. Open the blue clip on the air baffle, and lift the air baffle out of the chassis.

8. Remove all fan modules.

9. Remove the fan cage. Pull up the ejector levers at both sides of the fan cage and lift the fan cage to remove it from the chassis.

10. Remove DIMMs from the system board.

11. Remove heatsinks.

12. Remove the processors.

13. Install protective covers over the empty processor sockets.

14. Disconnect cables from the system board.

15. Remove the system board:

a. Loosen the two captive screws on the system board.

b. Hold the system board handle and slide the system board toward the server front to disengage the system board and the server management module. Lift the system board out of the chassis.

16. Remove the server management module. Slide the management module toward the server front to disengage the connectors on the module and the rear panel. Lift the management module out of the chassis.

Installing the server management module

1. Install the server management module. Slowly place the management module into the chassis. Then, slide the management module toward the server rear until the connectors on the module are securely seated.

2. Install the system board:

a. Slowly place the system board into the chassis. Then, hold the system board handle and slide the system board toward the server rear until the system board connector is successfully inserted into the server management module.

NOTE:

The system board is securely seated if you cannot use the system board handle to lift the system board.

b. Fasten the two captive screws on the system board.

3. Remove the installed protective covers over the processor sockets.

4. Open the frame and install processors.

5. Connect cables to the system board.

6. Install heatsinks.

7. Install DIMMs.

8. Install the fan cage and fan modules.

9. Install the chassis air baffle.

10. Install all the power supplies.

11. Install the serial & DSD module.

12. Install riser cards and connect cables to the riser cards.

13. Install the access panel.

14. Rack-mount the server. For more information, see "Rack-mounting the server."

15. Connect the power cord.

16. Power on the server. For more information, see "Powering on the server."

Replacing a SAS/SATA drive

The drives are hot swappable.

To configure RAID settings after the drive is replaced, see the storage controller user guide for the server.

Guidelines

If you are using the drives to create a RAID, follow these restrictions and guidelines:

· To avoid degraded RAID performance or RAID creation failures, make sure all drives in the RAID are the same type (HDDs or SSDs) and have the same connector type (SAS or SATA).

· For efficient use of storage, use drives that have the same capacity to build a RAID. If the drives have different capacities, the lowest capacity is used across all drives in the RAID.

· If one drive is used by several logical drives, RAID performance might be affected and maintenance complexities will increase.

· If the installed drive contains RAID information, you must clear the information before configuring RAIDs. As a best practice, install drives that do not contain RAID information.

IMPORTANT:

If you hot swap an HDD repeatedly within 30 seconds, the system might fail to identify the drive.

IMPORTANT:

SAS/SATA drives attached to a storage controller supports how swapping after entering the BIOS or OS.

Prerequisites

Take the following ESD prevention measures:

· Wear antistatic clothing.

· Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

· Do not wear any conductive objects, such as jewelry or watches.

When you replace a component, examine the slot and connector for damages. Make sure the pins are not damaged (bent for example) and do not contain any foreign objects.

Identify the position of the drive to be replaced.

Identify the RAID array information of the drive to be replaced. To replace a drive in a non-redundancy RAID array, back up data in the RAID array if the old drive is full or the new drive is of a different model.

Removing a SAS/SATA drive

1. Remove the security bezel, if any.

2. Observe the drive LEDs to verify that the drive is not selected by the storage controller and is not performing a RAID migration or rebuilding. For more information about drive LEDs, see drive LEDs in "Appendix B Component specifications".

3. Remove the drive:

¡ To remove an SSD, press the button on the drive panel to release the locking lever, and then hold the locking lever and pull the drive out of the slot.

¡ To remove an HDD, press the button on the drive panel to release the locking lever. Pull the drive 3 cm (1.18 in) out of the slot. Wait for a minimum of 30 seconds for the drive to stop rotating, and then pull the drive out of the slot.

4. Remove the drive carrier. Remove the screws that secure the drive and then remove the drive from the carrier.

Installing a SAS/SATA drive

IMPORTANT:

As a best practice, install drives that do not contain RAID information.

1. Attach the drive to the drive carrier. Place the drive in the carrier and then use four screws to secure the drive into place.

2. Insert the drive into the slot and push it gently until you cannot push it further, and then close the locking lever.

3. Install the security bezel, if any. Press the latch at the other end, close the security bezel, and then release the latch to secure the security bezel into place. Insert the key provided with the bezel into the lock on the bezel and lock the security bezel.

Verifying the replacement

Use one of the following methods to verify that the drive has been replaced correctly:

· Verify the drive properties (including capacity) by using one of the following methods:

¡ Log in to HDM. For more information, see HDM2 online help.

¡ Access the BIOS. For more information, see the storage controller user guide for the server.

¡ Access the CLI or GUI of the server.

· Observe the drive LEDs to verify that the drive is operating correctly. For more information about drive LEDs, see drive LEDs in "Appendix B Component specifications".

Adding an NVMe drive

Prerequisites

Take the following ESD prevention measures:

· Wear antistatic clothing.

· Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

· Do not wear any conductive objects, such as jewelry or watches.

When you replace a component, examine the slot and connector for damages. Make sure the pins are not damaged (bent for example) and do not contain any foreign objects.

Identify the position of the drive to be replaced.

Identify the RAID array information for the drive to be replaced. To replace a drive in a non-redundancy RAID array, back up data in the RAID array if the old drive is full or the new drive is of a different model.

For more information about the installation guidelines, see "Guidelines."

Installing an NVMe drive

NOTE:

Only some operating systems support the hot insertion of NVMe drives. For more information, use the component compatibility lookup tool at http://www.h3c.com/en/home/qr/default.htm?id=66.

1. Remove the intelligent security bezel, if any.

2. Install the drive into the drive carrier. Secure the four screws into the screw holes, and then fasten the screws in sequence.

3. Install an NVMe drive. Push the drive into the drive slot and close the locking lever on the drive panel.

4. Install the security bezel, if any. Press the latch at the other end, close the security bezel, and then release the latch to secure the security bezel into place. Insert the key provided with the bezel into the lock on the bezel and lock the security bezel.

Verifying the replacement

Use the following methods to verify that the drive is installed correctly:

· Verify the drive properties (including capacity) by using one of the following methods:

¡ Access HDM. For more information, see HDM2 online help.

¡ Access the BIOS. For more information, see the BIOS user guide for the server.

¡ Access the CLI or GUI of the server.

· Observe the drive LEDs to verify that the drive is operating correctly. For more information, see "Drive LEDs."

Replacing an NVMe drive

Guidelines

Support for hot swapping of NVMe drives varies by operating system.

If an operating system supports hot swapping of NVMe drives, follow these guidelines:

· Insert NVMe drives steadily without pauses to prevent the operating system from being stuck or restarted.

· Do not hot swap multiple NVMe drives at the same time. As a best practice, hot swap NVMe drives one after another at intervals longer than 30 seconds. After the operating system identifies the first NVMe drive, you can hot swap the next drive. If you insert multiple NVMe drives simultaneously, the system might fail to identify the drives.

Prerequisites

Take the following ESD prevention measures:

· Wear antistatic clothing.

· Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

· Do not wear any conductive objects, such as jewelry or watches.

When you replace a component, examine the slot and connector for damages. Make sure the pins are not damaged (bent for example) and do not contain any foreign objects.

Identify the position of the drive to be replaced.

Removing an NVMe drive

1. Remove the security bezel, if any.

2. Remove the NVMe drive. Press the button on the drive panel to release the locking lever, and then hold the locking lever and pull the drive out of the slot.

3. Remove the drive carrier. Remove the screws that secure the drive and then remove the drive from the carrier.

Installing an NVMe drive

1. Install an NVMe drive. Attach the drive to the drive carrier. Place the drive in the carrier and then use four screws to secure the drive into place.

2. Insert the drive into the slot and push it gently until you cannot push it further, and then close the locking lever.

3. Install the removed security bezel, if any. Press the latch at the other end, close the security bezel, and then release the latch to secure the security bezel into place. Insert the key provided with the bezel into the lock on the bezel and lock the security bezel.

Verifying the replacement

Use the following methods to verify that the drive is installed correctly:

· Verify the drive properties (including capacity) by using one of the following methods:

¡ Access HDM. For more information, see HDM2 online help.

¡ Access the BIOS. For more information, see the BIOS user guide for the server.

¡ Access the CLI or GUI of the server.

· Observe the drive LEDs to verify that the drive is operating correctly. For more information, see "Drive LEDs."

Replacing a drive backplane

WARNING!

To avoid bodily injury from hot surfaces, allow the server and its internal modules to cool before touching them.

Prerequisites

Take the following ESD prevention measures:

· Wear antistatic clothing.

· Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

· Do not wear any conductive objects, such as jewelry or watches.

When you replace a component, examine the slot and connector for damages. Make sure the pins are not damaged (bent for example) and do not contain any foreign objects.

Removing a drive backplane

1. Power off the server. For more information, see "Powering off the server."

2. Remove the server from the rack. For more information, see "Removing the server from a rack."

3. Remove the drives attached to the backplane.

4. Remove the access panel:

a. Press the button on the locking lever and then lift the locking lever.

The access panel automatically slides to the server rear.

b. Lift the access panel to remove it from the server.

5. Remove the fan modules.

6. Remove the fan cage. Pressing the locking tabs at both ends of the fan cage, lift the fan cage to remove it out of the chassis.

7. Disconnect cables from the backplane.

8. Remove the drive backplane. Loosen the captive screws that secure the backplane, and then lift the backplane out of the chassis.

Installing a drive backplane

1. Install a drive backplane. Place the backplane in the slot and then fasten the captive screws.

2. Connect cables to the drive backplane.

3. Install the fan cage.

4. Install the fan modules.

5. Install the access panel:

a. Place the access panel onto the server.

b. Slide the access panel to the server front and close the locking lever. The access panel snaps into place.

6. Install the removed drives.

7. Rack-mount the server. For more information, see "Rack-mounting the server."

8. Connect the power cord. For more information, see "Connecting the power cord."

9. Power on the server. For more information, see "Powering on the server."

Installing a rear drive cage

Prerequisites

Take the following ESD prevention measures:

· Wear antistatic clothing.

· Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

· Do not wear any conductive objects, such as jewelry or watches.

· When you replace a component, examine the slot and connector for damages. Make sure the pins are not damaged (bent for example) and do not contain any foreign objects.

Procedure

1. Power off the server. For more information, see "Powering off the server."

2. Remove the server from the rack. For more information, see "Removing the server from a rack."

3. Remove the access panel:

a. Press the button on the locking lever and then lift the locking lever.

The access panel automatically slides to the server rear.

b. Lift the access panel to remove it from the server.

4. Remove the PCIe riser card blank. Lift the blank to remove it from the chassis.

5. For a 2SFF UniBay drive cage, install a bracket:

a. Align the guide pin on the bracket with the notch in the chassis.

b. Place the bracket in the chassis.

c. Use screws to secure the bracket.

6. Install the rear drive cage:

a. Place the drive cage in the chassis.

b. Use screws to secure the drive cage.

7. Connect the cables. See "Connecting drive cables."

8. Install the blank. Aligning the guide pins on the blank with the notches in the chassis, insert the blank into the slot.

9. Install the access panel:

a. Place the access panel onto the server.

b. Slide the access panel to the server front and close the locking lever. The access panel snaps into place.

10. Rack-mount the server. For more information, see "Rack-mounting the server."

11. Connect the power cord.

12. Power on the server. For more information, see "Powering on the server."

Replacing riser cards and PCIe modules

WARNING!

To avoid bodily injury from hot surfaces, allow the server and its internal modules to cool before touching them.

Guidelines

If a processor is faulty or absent, the PCIe slots connected to it are unavailable. For more information about riser card, PCIe slot, and processor mappings, see "Riser cards."

The server provides three PCIe riser connectors on the system board to connect riser cards, which hold PCIe modules. For more information about the connector locations, see system board components in "Appendix A Server specifications." For information about PCIe slots on a riser card, see riser cards in "Appendix B Component specifications."

You can install a PCIe module in a PCIe slot for a larger-sized PCIe module. For example, an LP PCIe module can be installed in a slot for an FHFL PCIe module.

A PCIe slot can supply power to the installed PCIe module if the maximum power consumption of the module does not exceed 75 W. If the maximum power consumption exceeds 75 W, a power cord is required.

The description for PCIe5.0 x16 (16,8,4,2,1) is as follows:

· PCIe5.0: Fifth-generation signal speed.

· x16: Connector bandwidth.

· (16,8,4,2,1): Compatible bus bandwidth, including x16, x8, x4, x2, and x1.

For an x8 MCIO connector, x8 indicates the bus bandwidth.

Riser card and PCIe module compatibility

For the riser card and PCIe module compatibility, see Table 10, Table 11, Table 12, and Table 13. For the riser assembly module and PCIe module compatibility, see riser cards in "Appendix B Component specifications."

Table 10 Riser card and PCIe module compatibility (1)

Riser card model	Riser card location	PCIe slots on a riser card	PCIe slot or connector description	PCIe module for PCIe slot or connector	PCIe slot power capability	Processor
RC-3FHFL-2U-G6	PCIe riser connector 1	Slots 1 through 3	PCIe5.0 x16 (16,8,4,2,1)	FHFL	75 W	Processor 1
		SLOT 1-A	x8 MCIO connector	Connected to MCIO connector C1-P1A on the system board, providing an x16 PCIe link for slot 1 with x8 MCIO connector SLOT 1-C	N/A	Processor 1
		SLOT 1-C	x8 MCIO connector	Connected to MCIO connector C1-P1C on the system board, providing an x16 PCIe link for slot 1 with x8 MCIO connector SLOT 1-A	N/A	Processor 1
		SLOT 2-A	x8 MCIO connector	Connected to MCIO connector C1-P2A on the system board, providing an x16 PCIe link for slot 2 with x8 MCIO connector SLOT 2-C	N/A	Processor 1
		SLOT 2-C	x8 MCIO connector	Connected to MCIO connector C1-P2C on the system board, providing an x16 PCIe link for slot 2 with another x8 MCIO connector SLOT 2-A	N/A	Processor 1
	PCIe riser connector 2	Slots 4 through 6	PCIe5.0 x16 (16,8,4,2,1)	FHFL	75 W	Processor 2
		SLOT 1-A	x8 MCIO connector	Connected to MCIO connector C2-P3A, providing an x16 PCIe link for slot 4 with x8 MCIO connector SLOT 1-C	N/A	Processor 2
		SLOT 1-C	x8 MCIO connector	Connected to MCIO connector C2-P3C on the system board, providing an x16 PCIe link for slot 4 with x8 MCIO connector SLOT 1-A	N/A	Processor 2
		SLOT 2-A	x8 MCIO connector	Connected to MCIO connector C2-P0A on the system board, providing an x16 PCIe link for slot 5 with x8 MCIO connector SLOT 2-C	N/A	Processor 2
		SLOT 2-C	x8 MCIO connector	Connected to MCIO connector C2-P0C on the system board, providing an x16 PCIe link for slot 5 with x8 MCIO connector SLOT 2-A	N/A	Processor 2

Table 11 Riser card and PCIe module compatibility (2)

Riser card model	Riser card location	PCIe slots on a riser card	PCIe slot or connector description	PCIe module for PCIe slot or connector	PCIe slot power capability	Processor
RC-3FHHL-2U-G6	PCIe riser connector 1	Slot 1	PCIe5.0 x16 (16,8,4,2,1)	FHHL	75 W	Processor 1
		Slot 2/3	PCIe5.0 x16 (8,4,2,1)	FHHL	75 W	Processor 1
		SLOT 1-A	x8 MCIO connector	Connected to MCIO connector C2-P0A on the system board, providing an x16 PCIe link for slot 1 with x8 MCIO connector SLOT 1-C	N/A	Processor 1
		SLOT 1-C	x8 MCIO connector	Connected to MCIO connector C2-P0C on the system board, providing an x16 PCIe link for slot 1 with x8 MCIO connector SLOT 1-A	N/A	Processor 1
	PCIe riser connector 2	Slot 4	PCIe5.0 x16 (16,8,4,2,1)	FHHL	75 W	Processor 2
		Slot 5/6	PCIe5.0 x16 (8,4,2,1)	FHHL	75 W	Processor 2
		SLOT 1-A	x8 MCIO connector	Connected to MCIO connector C2-P2A, providing an x16 PCIe link for slot 1 with x8 MCIO connector SLOT 1-C.	N/A	Processor 2
		SLOT 1-C	x8 MCIO connector	Connected to MCIO connector C2-P2C on the system board, providing an x16 PCIe link for slot 1 with x8 MCIO connector SLOT 1-A	N/A	Processor 2

Table 12 Riser card and PCIe module compatibility (3)

Riser card model	Riser card location	PCIe slots on a riser card	PCIe slot or connector description	PCIe module for PCIe slot or connector	PCIe slot power capability	Processor
RC-2FHFL-2U-LC-G6	PCIe riser connector 2	slot 4	PCIe5.0 x16 (16,8,4,2,1)	FHFL	75 W	Processor 2
		slot 5	PCIe5.0 x16 (16,8,4,2,1)	FHFL	75 W	Processor 2
		SLOT 1-A	x8 MCIO connector	Connector to MCIO interface C2-P3A on the system board, and work with the other x8 MCIO connector SLOT 1-C to provide a x16 PCIe link for slot 4	N/A	Processor 2
		SLOT 1-C	x8 MCIO connector	Connector to MCIO interface C2-P3C on the system board, and work with the other x8 MCIO connector SLOT 1-A to provide a x16 PCIe link for slot 4	N/A	Processor 2
		SLOT 2-A	x8 MCIO connector	Connector to MCIO interface C2-P3A on the system board, and work with the other x8 MCIO connector SLOT 2-C to provide a x16 PCIe link for slot 5	N/A	Processor 2
		SLOT 2-C	x8 MCIO connector	Connector to MCIO interface C2-P0C on the system board, and work with the other x8 MCIO connector SLOT 2-A to provide a x16 PCIe link for slot 5	N/A	Processor 2

Table 13 Riser card and PCIe module compatibility (4)

Riser card model	Riser card location	PCIe slots on a riser card	PCIe slot or connector description	PCIe module for PCIe slot or connector	PCIe slot power capability	Processor
PCA-R4900-4GPU-G6	PCIe riser connector 1 and PCIe riser connector 2	Slot 3	PCIe5.0 x16 (16,8,4,2,1)	FHHL	75 W	Processor 1
		Slot 6	PCIe5.0 x16 (16,8,4,2,1)	FHHL	75 W	Processor 2
		Slot 11	PCIe5.0 x16 (16,8,4,2,1)	FHFL	300 W*	Processor 1
		Slot 12	PCIe5.0 x16 (16,8,4,2,1)	FHFL	300 W*	Processor 1
		Slot 13	PCIe5.0 x16 (16,8,4,2,1)	FHFL	300 W*	Processor 2
		Slot 14	PCIe5.0 x16 (16,8,4,2,1)	FHFL	300 W*	Processor 2

NOTE:

300W*: Slots 11 through 14 on the rear 4GPU module support only GPU modules. To provide a power capacity of 300 W, you must connect external GPU power cords.

Prerequisites

Take the following ESD prevention measures:

· Wear antistatic clothing.

· Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

· Do not wear any conductive objects, such as jewelry or watches.

When you replace a component, examine the slot and connector for damages. Make sure the pins are not damaged (bent for example) and do not contain any foreign objects.

Removing a riser card and a PCIe module

1. Power off the server. For more information, see "Powering off the server."

2. Remove the server from the rack. For more information, see "Removing the server from a rack."

3. Remove the access panel:

a. Press the button on the locking lever and then lift the locking lever.

The access panel automatically slides to the server rear.

b. Lift the access panel to remove it from the server.

4. Disconnect all cables that hinder the replacement, if any.

5. Remove the riser card installed with a PCIe module. Pressing the unlocking button, lift the riser card out of the chassis.

6. Remove the PCIe module from the riser card:

a. Remove the screws on the riser card.

b. Pull the PCIe module out of the slot.

Installing a riser card and a PCIe module

1. Install the PCIe module on the riser card:

a. Remove the PCIe module blank. Remove the screws on the blank, and then pull out the blank.

b. Install the PCIe module to the riser card. Insert the PCIe module into the PCIe slot along the guide rails, and then use screws to secure the PCIe module.

2. Install the riser card on the server:

a. Lift the riser card blank to remove it from the chassis.

b. Install the riser card on the PCIe riser connector. Pressing the unlocking button, insert the riser card into the PCIe riser slot along the rails. Make sure the unlocking button is in locked position.

3. Connect cables to the riser card or PCIe modules, if any.

4. Install the access panel:

a. Place the access panel onto the server.

b. Slide the access panel to the server front and close the locking lever. The access panel snaps into place.

5. Rack-mount the server. For more information, see "Rack-mounting the server."

6. Connect the power cord.

7. Power on the server. For more information, see "Powering on the server."

Installing PCIe modules and a riser card on PCIe riser bay 3

Prerequisites

Take the following ESD prevention measures:

· Wear antistatic clothing.

· Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

· Do not wear any conductive objects, such as jewelry or watches.

When you replace a component, examine the slot and connector for damages. Make sure the pins are not damaged (bent for example) and do not contain any foreign objects.

For more information, see "Replacing riser cards and PCIe modules."

Procedure

1. Identify the position of the PCIe riser connector. For more information, see system board components in "Appendix A Server specifications."

2. Power off the server. For more information, see "Powering off the server."

3. Remove the server from the rack. For more information, see "Removing the server from a rack."

4. Remove the access panel:

a. Press the button on the locking lever and then lift the locking lever.

The access panel automatically slides to the server rear.

b. Lift the access panel to remove it from the server.

5. Lift the PCIe riser card blank to remove it.

6. Assemble the riser 3 assembly module in advance as required.

7. Install a PCIe module to the riser 3 assembly module:

a. Remove the PCIe module blank. Loosen the screws on the PCIe module blank, and then remove the PCIe module blank.

b. Install the PCIe module into the riser card. Insert the PCIe module into the PCIe slot along the guide rails, and fasten the screws to secure the PCIe module.

8. Install the support bracket:

a. Align the holes on the support bracket with the guide holes on the chassis.

b. Place the support bracket onto the chassis.

c. Fasten the screws to secure the support bracket.

9. Install the riser 3 assembly module with the PCIe module to PCIe riser bay 3. To secure the riser 3 assembly module into place, make sure the protruding metal piece on the riser 3 assembly module is aligned with the left hole on the power supply air baffle.

10. Connect cables on the riser 3 assembly module.

11. Install the access panel:

a. Place the access panel onto the server.

b. Slide the access panel to the server front and close the locking lever. The access panel snaps into place.

12. Rack-mount the server. For more information, see "Rack-mounting the server."

13. Connect the power cord.

14. Power on the server. For more information, see "Powering on the server."

Installing PCIe modules and a riser card on PCIe riser bay 4

Prerequisites

Take the following ESD prevention measures:

· Wear antistatic clothing.

· Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

· Do not wear any conductive objects, such as jewelry or watches.

When you replace a component, examine the slot and connector for damages. Make sure the pins are not damaged (bent for example) and do not contain any foreign objects.

For more information, see "Replacing riser cards and PCIe modules."

Procedure

1. Power off the server. For more information, see "Powering off the server."

2. Remove the server from the rack. For more information, see "Removing the server from a rack."

3. Remove the access panel:

a. Press the button on the locking lever and then lift the locking lever.

The access panel automatically slides to the server rear.

b. Lift the access panel to remove it from the server.

4. Lift the PCIe riser card blank to remove it.

5. Assemble the riser 4 assembly module in advance as required.

6. Install a PCIe module to the riser 4 assembly module:

a. Remove the PCIe module blank. Loosen the screws on the PCIe module blank, and then remove the PCIe module blank.

b. Install the PCIe module into the riser card. Insert the PCIe module into the PCIe slot along the guide rails, and fasten the screws to secure the PCIe module.

7. Install the support brackets. Align the holes of a support bracket with the guide holes on the chassis, place down the support bracket, and then fasten the screws to secure the support bracket.

8. Install the riser 4 assembly module with the PCIe module to PCIe riser bay 4. To secure the riser 4 assembly module into place, make sure the protruding metal piece on the riser 3 assembly module is aligned with the mid hole on the power supply air baffle.

9. Connect cables on the riser 4 assembly module.

10. Install the access panel:

a. Place the access panel onto the server.

b. Slide the access panel to the server front and close the locking lever. The access panel snaps into place.

11. Rack-mount the server. For more information, see "Rack-mounting the server."

12. Connect the power cord.

13. Power on the server. For more information, see "Powering on the server."

Replacing a storage controller and a power fail safeguard module

WARNING!

To avoid bodily injury from hot surfaces, allow the server and its internal modules to cool before touching them.

For some storage controllers, you can order a power fail safeguard module to prevent data loss when power outage occurs.

A power fail safeguard module provides a flash card and a supercapacitor. When a system power failure occurs, this supercapacitor can provide power for a minimum of 20 seconds. During this interval, the storage controller transfers data from DDR memory to the flash card, where the data remains indefinitely or until the controller retrieves the data.

A supercapacitor has a lifespan of 3 to 5 years. If the lifespan of a supercapacitor expires, a supercapacitor exception might occur. The system notifies users of supercapacitor exceptions by using the following methods:

· For a PMC storage controller, the status of the flash card will become Abnormal_status code. You can check the status code to identify the exception. For more information, see HDM2 online help.

· For an LSI storage controller, the status of the flash card of the power fail safeguard module will become Abnormal.

You can also review log messages from HDM2 to identify supercapacitor exceptions.

For the power fail safeguard module to take effect, replace the supercapacitor before its lifespan expires.

The supercapacitor might have a low charge after the power fail safeguard module is installed or after the server is powered up. If the system displays that the supercapacitor has low charge, no action is required. The system will charge the supercapacitor automatically. You can view the status of the supercapacitor from HDM or the BIOS.

IMPORTANT:

After the supercapacitor replacement, verify that cache related settings are enabled for logical drives. For more information, see HDM2 online help.

Guidelines

When you install standard storage controllers, follow these restrictions and guidelines:

· Make sure the standard storage controllers are of the same vendor (PMC or LSI). For information about the available storage controllers and their vendors, use the component compatibility lookup tool at http://www.h3c.com/en/home/qr/default.htm?id=66.

· If the drives are installed only at the server front, install storage controllers to different riser cards. The controller in a lower-numbered slot is connected to the drive backplane for the lower-numbered drive carriers and the controller in a higher-numbered slot to the drive backplane for the higher-numbered drive carriers. For more information about the drive carrier locations, see the front panel view in " Appendix A Server specifications."

· If the drives are installed at both the server front and server rear, install storage controllers to one riser card. The controller in a lower-numbered slot is connected to the front drive backplane and the controller in a higher-numbered slot to the rear drive backplane. For information about slot locations, see the rear panel view in "Appendix A Server specifications."

Use Table 14 to identify the supercapacitor available for a storage controller.

Table 14 Standard storage controller and supercapacitor compatibility matrix

Standard storage controller	Supercapacitor	Supercapacitor installation location
RAID-LSI-9560-LP-8i-4GB	BAT-LSI-G3-A	In the supercapacitor container on the air baffle
RAID-LSI-9560-LP-16i	BAT-LSI-G3-A
RAID-P460-B4	BAT-PMC-G3-2U
HBA-LSI 9540-8i	Not supported	Not supported
HBA-LSI-9500-LP-8i
HBA-LSI 9500-16i

To replace the storage controller with a controller of a different model, back up data in the drives of the storage controller and clear RAID configuration.

To replace the storage controller with a controller of the same model, make sure the following configurations remain the same after replacement:

· Storage controller operating mode.

· Storage controller firmware version.

· BIOS boot mode.

· First boot option in Legacy mode.

For more information, see the storage controller user guide for the server and the BIOS user guide for the server.

Prerequisites

Take the following ESD prevention measures:

· Wear antistatic clothing.

· Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

· Do not wear any conductive objects, such as jewelry or watches.

When you replace a component, examine the slot and connector for damages. Make sure the pins are not damaged (bent for example) and do not contain any foreign objects.

Removing a standard storage controller and a power fail safeguard module

1. Power off the server. For more information, see "Powering off the server."

2. Remove the server from the rack. For more information, see "Removing the server from a rack."

3. Remove the access panel:

a. Press the button on the locking lever and then lift the locking lever.

The access panel automatically slides to the server rear.

b. Lift the access panel to remove it from the server.

4. Disconnect all cables from the standard storage controller.

5. Remove the standard storage controller:

a. Remove the riser card where the standard storage controller resides. Lift the riser card to remove the riser card from the chassis.

b. Remove the standard storage controller from the riser card. Open the retaining latch on the riser card, and then pull the storage controller out from the slot.

6. Remove the power fail safeguard module or super capacitor, if any. Open the protective cover over the supercapacitor, and take the supercapacitor out of the holder.

Installing a standard storage controller and a power fail safeguard module

1. (Optional.) Install the supercapacitor. Place the supercapacitor into the holder as instructed on the holder, and close the protective cover.

2. Install the standard storage controller on the riser card. Insert the standard storage controller into the PCIe slot along the guide rails, and then close the retaining latch on the riser card.

3. Install the riser card on the server.

4. Connect the cables for the standard storage controller to the drive backplane. For more information, see "Connecting drive cables."

5. Install the removed power fail safeguard module or supercapacitor. Connect the supercapacitor extension cable to the flash card. For more information, see "Connecting the supercapacitor cable."

6. Install the access panel:

a. Place the access panel onto the server.

b. Slide the access panel to the server front and close the locking lever. The access panel snaps into place.

7. Rack-mount the server. For more information, see "Rack-mounting the server."

8. Connect the power cord.

9. Power on the server. For more information, see "Powering on the server."

Replacing a GPU module

Guidelines

For information about configuration guides for the power cords of GPU modules, contact Technical Support.

To install FHFL dual-width GPU modules, install them to slots as shown in Table 15, as a best practice, and follow these guidelines:

· Install GPU modules in PCIe slots with x16 bus bandwidth.

· If the number of GPU modules is equal to or smaller than 3, install the GPU modules to riser cards.

· If the number of GPU modules is equal to 4, install the GPU modules to the rear 4GPU module.

To install FHFL single-width GPU, install them to slots as shown in Table 16, as a best practice, and follow these guidelines:

· Install GPU modules in PCIe slots with x16 bus bandwidth.

· If the number of GPU modules is equal to or smaller than 3, install one GPU to each riser card.

· If the number of GPU modules is equal to or greater than 4, install two RC-3FHFL-2U-G6 riser cards and install two GPU modules to each riser card as a best practice.

To install HHHL single-width GPU, install them to slots as shown in Table 17, as a best practice. If the number of GPU modules is equal to or greater than 8, you can install GPU modules to PCIe slots with x8 bus bandwidth. In other cases, install GPU modules to PCIe slots with x16 bus bandwidth.

Table 15 FHFL dual-width GPU installation guidelines

Number of GPUs	Recommended GPU installation locations
1	Slot 5
2	Slots 2 and 5
3	Slots 2, 5, and 9
4	Slots 11, 12, 13, and 14

Table 16 FHFL single-width GPU installation guidelines

Number of GPUs	Recommended GPU installation locations
1	Slot 5
2	Slots 2 and 5
3	Slots 2, 5, and 9
4	Slots 1, 2, 4, and 5
5	Slots 1, 2, 4, 5, and 9

Table 17 HHHL GPU installation guidelines

Number of GPUs	Recommended GPU installation locations
1	slot 5
2	slot 2, 5
3	slot 2, 5, 9
4	slot 1, 2, 4, 5
5	slot 1, 2, 4, 5, 9
6	slot 1, 2, 3, 4, 5, 6
7	slot 1, 2, 3, 4, 5, 6, 9
8	slot 1, 2, 3, 4, 5, 6, 7, 8

Prerequisites

Take the following ESD prevention measures:

· Wear antistatic clothing.

· Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

· Do not wear any conductive objects, such as jewelry or watches.

When you replace a component, examine the slot and connector for damages. Make sure the pins are not damaged (bent for example) and do not contain any foreign objects.

Procedures

Removing a GPU module

1. Power off the server. For more information, see "Powering off the server."

2. Remove the server from the rack. For more information, see "Removing the server from a rack."

3. Remove the access panel:

a. Press the button on the locking lever and then lift the locking lever.

The access panel automatically slides to the server rear.

b. Lift the access panel to remove it from the server.

4. Disconnect all cables that hinder the replacement, if any.

5. Remove the riser card where the GPU module resides. Pressing the unlocking button on the riser card, lift the riser card out of the chassis.

6. Remove the GPU module from the riser card:

a. Disconnect the cable from the GPU module.

b. Open the retaining latch on the riser card, and pull the GPU module out from the slot.

(Optional) Adjusting the form of the riser card

IMPORTANT:

To replace the GPU module with a new one of different length, adjust the riser card form as needed.

1. Remove the screws on the riser card.

2. Adjust the riser card length. You can have a short or long riser card as needed.

3. Fasten the screws to secure the riser card to its new form.

4. Replace the air baffle for the new form of the riser card.

Installing a GPU module

1. Install a GPU module on the riser card:

a. Insert the GPU module into the PCIe slot along the guide rails, and then close the retaining latch on the riser card.

b. (Optional.) Connect the GPU module power cord according to the cable label.

2. Reconnect other cables to the riser card.

3. Install the riser card on the server. Pressing the unlocking button, insert the riser card into the PCIe riser slot along the rails. Make sure the unlocking button is in locked position.

4. Install the access panel:

a. Place the access panel onto the server.

b. Slide the access panel to the server front and close the locking lever. The access panel snaps into place.

5. Rack-mount the server. For more information, see "Rack-mounting the server."

6. Connect the power cord.

7. Power on the server. For more information, see "Powering on the server."

Replacing a network adapter

WARNING!

To avoid bodily injury from hot surfaces, allow the server and its internal modules to cool before touching them.

The OCP network adapter supports NCSI. By default, port 1 on the OCP network adapter acts as the HDM shared network port. You can configure another port on the OCP network adapter as the HDM shared network port from the HDM Web interface. For more information, see HDM online help.

Guidelines

An OCP network adapter can be installed only in the OCP3.0 network adapter connectors on the system board. For information about the OCP network adapter connectors on the system board, see system board components in "Appendix A Server specifications."

For operating systems that support hot swapping of OCP network adapters, use the component compatibility lookup tool at http://www.h3c.com/en/home/qr/default.htm?id=66.

To install a standard PCIe network adapter, a riser card is required. For more information about riser card and PCIe module compatibility, see riser cards in "Appendix B Component specifications."

Prerequisites

Take the following ESD prevention measures:

· Wear antistatic clothing.

· Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

· Do not wear any conductive objects, such as jewelry or watches.

When you replace a component, examine the slot and connector for damages. Make sure the pins are not damaged (bent for example) and do not contain any foreign objects.

Replacing a standard PCIe network adapter

Removing a standard PCIe network adapter

1. Power off the server. For more information, see "Powering off the server."

2. Disconnect cables from the standard PCIe network adapter.

3. Remove the server from the rack. For more information, see "Removing the server from a rack."

4. Remove the access panel:

a. Press the button on the locking lever and then lift the locking lever.

The access panel automatically slides to the server rear.

b. Lift the access panel to remove it from the server.

5. Disconnect all cables that hinder the replacement, if any.

6. Remove the riser card that holds the PCIe network adapter. Lift the riser card to remove it from the chassis.

7. Remove the PCIe network adapter from the riser card. Loosen the captive screws on the riser card and pull the PCIe network adapter out of the slot.

Installing a standard PCIe network adapter

For more information, see "Installing a riser card and a PCIe module."

Adding an OCP network adapter

Prerequisites

Take the following ESD prevention measures:

· Wear antistatic clothing.

· Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

· Do not wear any conductive objects, such as jewelry or watches.

When you replace a component, examine the slot and connector for damages. Make sure the pins are not damaged (bent for example) and do not contain any foreign objects.

Procedure

1. Power off the server. For more information, see "Powering off the server."

2. Remove the server from the rack. For more information, see "Removing the server from a rack."

3. Remove the access panel:

a. Press the button on the locking lever and then lift the locking lever.

b. Lift the access panel to remove it from the server.

4. Remove the rear drive support bracket next to OCP network adapter slot 1 on the system board. Loosen the screws that secure the bracket, and remove the bracket.

5. Secure the connector end of the cable for OCP network adapter slot 1. Place the connector onto OCP network adapter slot 1, and use screws to secure the connector in place.

6. Connect the cable for OCP network adapter slot 1.

7. Install the rear drive support bracket.

8. Remove the blank over OCP network adapter slot 1.

9. Install an OCP network adapter. Take the network adapter out of the antistatic bag, push the network adapter into the slot slowly, and then fasten the captive screw on the network adapter.

10. Install the access panel:

a. Place the access panel onto the server.

b. Slide the access panel to the server front and close the locking lever. The access panel snaps into place.

11. Rack-mount the server. For more information, see "Rack-mounting the server."

12. Connect the power cord.

13. Power on the server. For more information, see "Powering on the server."

Replacing an OCP network adapter

Some operating systems support managed removal of some OCP network adapters. To replace such an OCP network adapter, you do not need to power off the server. For more information about managed removal, see "Appendix B Managed removal of OCP network adapters." This section describes the procedure to replace an OCP network adapter that does not support managed removal.

Removing an OCP network adapter

1. Power off the server. For more information, see "Powering off the server."

2. Disconnect all cables from the OCP network adapter.

3. Remove the OCP network adapter: Loosen the captive screws on the OCP network adapter and pull the OCP network adapter out from the chassis.

Installing an OCP network adapter

1. Install the OCP network adapter: Insert the OCP network adapter into the slot and fasten the captive screws on it.

2. Connect cables to the OCP network adapter.

3. Power on the server. For more information, see "Powering on the server."

4. (Optional.) Configure a network port on the OCP network adapter as an HDM shared network port.

OCP network adapters inserted into OCP adapter slots support NCSI. By default, port 1 on an OCP network adapter acts as the HDM shared network port. You can specify another port on the OCP network adapter as the HDM shared network port from the HDM Web interface. Note that you can specify only one port as the HDM shared network port at the same time.

Replacing a SATA M.2 SSD and the front M.2 SSD expander module

Guidelines

WARNING!

To avoid bodily injury from hot surfaces, allow the server and its internal modules to cool before touching them.

M.2 SSD drives can be installed in a server through an M.2 SSD expander module. The installation position of the expander module can be either at the front or back of the chassis, resulting in front or rear-mounted M.2 SSD hard drives.

Front-mounted SATA/NVMe M.2 SSD drives

· The front-mounted M.2 SSD expander module is installed between the drive backplane and the fan at the front of the chassis. It supports the installation of SATA and NVMe M.2 SSD drives, with a maximum configuration of 2 drives. The expander module is connected to the system board using data cables. For specific wiring methods, see "Connecting cables for the front M.2 SSD expander module."

· When configuring 2 SATA/NVMe M.2 SSD drives on the front-mounted expander module, you can create a RAID array. Supported RAID levels are RAID 0 and RAID 1. To ensure reliability when creating a RAID array, install two identical SATA/NVMe M.2 SSD drives as a best practice.

· As a best practice, use the SATA M.2 SSD drives for installing the operating system.

Figure 16 Front M.2 SSD expander module (front view)

114-M.2转接卡正面

(1) Data cable connector	(2) M.2 SSD drive slot 1

Figure 17 Front M.2 SSD expander module (rear view)

115-M.2转接卡反面

(1) M.2 SSD drive slot 2

Rear-mounted SATA/NVMe M.2 RAID controller

· The SATA M.2 RAID controller supports a maximum of 2 SATA M.2 SSDs.

· When configuring 2 SATA M.2 SSD drives on the M.2 SSD RAID controller, to ensure reliability when creating a RAID array, install 2 SATA M.2 SSDs of the same model as a best practice.

· The SATA M.2 RAID controller supports RAID 0 and RAID 1 for SATA M.2 SSD drives. For RAID configuration methods, see the storage controller user manual.

· The SATA M.2 RAID controller can be installed in any PCIe slot with x8 or higher bus bandwidth.

· As a best practice, use SATA M.2 SSDs to install the operating system.

Figure 18 SATA M.2 RAID controller

(1) SATA M.2 RAID controller drive slot 1	(2): SATA M.2 RAID controller drive slot 2

Prerequisites

Take the following ESD prevention measures:

· Wear antistatic clothing.

· Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

· Do not wear any conductive objects, such as jewelry or watches.

· When you replace a component, examine the slot and connector for damages. Make sure the pins are not damaged (bent for example) and do not contain any foreign objects.

Removing a SATA M.2 SSD and the M.2 SSD expander module

1. Power off the server. For more information, see "Powering off the server."

2. Remove the server from the rack. For more information, see "Removing the server from a rack."

3. Remove the access panel:

a. Press the button on the locking lever and then lift the locking lever.

The access panel automatically slides to the server rear.

b. Lift the access panel to remove it from the server.

4. Remove the SATA M.2 SSD expander module that holds the SATA M.2 SSD:

a. Disconnect the cable from the SATA M.2 SSD expander module.

b. Remove the expander module. Remove the screws that secure the expander module and then pull the expander module out.

5. Remove the SATA M.2 SSD. Slide the locking tab, lift the SSD, and then pull the SSD out of the slot.

Installing a SATA M.2 SSD and the M.2 SSD expander module

1. Install the SATA M.2 SSD to the SATA M.2 SSD expander module. Insert the connector of the SSD into the socket, slide the locking tab, press the SSD to secure the SSD into place, and then release the locking tab.

2. Install the expander module.

a. Align the two screw holes in the expander module with the two internal threaded studs on the chassis, put the expander module onto the chassis, and then use screws to secure the expander module.

b. Connect the SATA M.2 SSD cable. For more information, see "Connecting cables for the front M.2 SSD expander module."

3. Install the access panel:

a. Place the access panel onto the server.

b. Slide the access panel to the server front and close the locking lever. The access panel snaps into place.

4. Rack-mount the server. For more information, see "Rack-mounting the server."

5. Connect the power cord.

6. Power on the server. For more information, see "Powering on the server."

Replacing a serial & DSD module

Prerequisites

Take the following ESD prevention measures:

· Wear antistatic clothing.

· Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

· Do not wear any conductive objects, such as jewelry or watches.

When you replace a component, examine the slot and connector for damages. Make sure the pins are not damaged (bent for example) and do not contain any foreign objects.

Restrictions and guidelines

To avoid the waste of SD card storage space, install two SD cards that have the same storage capacity.

Removing a serial & DSD module

1. Power off the server. For more information, see "Powering off the server."

2. Remove the serial & DSD module. Loosen the captive screw on the module and pull the module out of the slot.

Installing a serial & DSD module

1. Install the serial & DSD module. Insert the module into the slot and fasten the captive screw on the module.

2. Power on the server. For more information, see "Powering on the server."

Replacing an SD card

Prerequisites

Take the following ESD prevention measures:

· Wear antistatic clothing.

· Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

· Do not wear any conductive objects, such as jewelry or watches.

When you replace a component, examine the slot and connector for damages. Make sure the pins are not damaged (bent for example) and do not contain any foreign objects.

Removing an SD card and serial & DSD module

1. Power off the server. For more information, see "Powering off the server."

2. Remove the serial & DSD module. Loosen the captive screw on the module and pull the module out of the slot.

3. Remove each of the SD cards installed on the serial & DSD module:

a. Press the SD card to release it.

b. Pull the SD card out of the slot.

Installing an SD card and serial & DSD module

1. Install a new SD card on the serial & DSD module. Insert the SD card into the slot and gently press the SD card to secure it in the slot.

2. Install the serial & DSD module on the server. Insert the module into the slot and fasten the captive screw on the module.

3. Power on the server. For more information, see "Powering on the server."

Replacing a chassis ear

Replace a chassis ear if it fails or any of the components (for example, I/O components or VGA/USB connectors) fails.

The procedure is the same for the left and right chassis ears. This section uses the left chassis ear as an example.

Removing a chassis ear

1. Power off the server. For more information, see "Powering off the server."

2. Remove the server from the rack, if the space over the server is insufficient. For more information, see "Removing the server from a rack."

3. Remove the access panel:

a. Press the button on the locking lever and then lift the locking lever.

The access panel automatically slides to the server rear.

b. Lift the access panel to remove it from the server.

4. Remove the fan cage. Pull up the ejector levers at both sides of the fan cage and lift the fan cage to remove it from the chassis.

5. Remove the chassis air baffle. Lift the air baffle out of the chassis.

6. Remove the front I/O component cable assembly:

a. Disconnect the front I/O component cable assembly from the system board.

b. Remove the cable protection plate. Remove the captive screws that secure the cable protection plate, press the cable protection plate and slide it toward the rear of the chassis until you cannot slide it further, and then pull out the cable protection plate.

c. Remove the front I/O component cable assembly.

7. Remove the chassis ear. Remove the screws that secure the left chassis ear, and then pull the chassis ear until it is removed.

Installing a chassis ear

1. Install a chassis ear. Attach the chassis ear to the corresponding side of the server, and use screws to secure the chassis ear into place.

2. Install the front I/O component cable assembly:

a. Insert the front I/O component cable assembly into the cable cutout.

b. Install the cable protection plate on the chassis. Insert the cable protection plate along the slot and slide it toward the front of the chassis until you cannot slide it further, and then install the captive screws on the cable protection plate.

c. Connect the front I/O component cable assembly to the front I/O connector on the system board.

3. Install the fan cage. Place the fan cage into the chassis and close the ejector levers.

4. Install the chassis air baffle.

5. Install the access panel:

a. Place the access panel onto the server.

b. Slide the access panel to the server front and close the locking lever. The access panel snaps into place.

6. Rack-mount the server. For more information, see "Rack-mounting the server."

7. Connect the power cord. For more information, see "Connecting the power cord."

8. Power on the server. For more information, see "Powering on the server."

Replacing a chassis air baffle

You might need to replace the chassis air baffle on the server if it is not compatible with the riser cards you are installing.

Removing a chassis air baffle

1. Power off the server. For more information, see "Powering off the server."

2. Remove the server from the rack, if the space over the server is insufficient. For more information, see "Removing the server from a rack."

3. Remove the access panel:

a. Press the button on the locking lever and then lift the locking lever.

The access panel automatically slides to the server rear.

b. Lift the access panel to remove it from the server.

4. Remove the chassis air baffle. Press the tabs on the air baffle, and then lift the air baffle out of the chassis.

Installing a chassis air baffle

1. Install the chassis air baffle. Place the chassis air baffle in the chassis.

2. Install the access panel:

a. Place the access panel onto the server.

b. Slide the access panel to the server front and close the locking lever. The access panel snaps into place.

3. Rack-mount the server. For more information, see "Rack-mounting the server."

4. Connect the power cord. For more information, see "Connecting the power cord."

5. Power on the server. For more information, see "Powering on the server."

Replacing a fan module

The fan modules are hot swappable and supports N+1 redundancy.

If sufficient space is available for replacement, you can replace a fan module without removing the server from the rack.

Guidelines

The server must be fully configured with fan modules of the same model.

The server supports both single-rotor FAN-8038-2U-G6 fan module and dual-rotor FAN-8056-2U-G6 fan module. When any of the following conditions are met, you must install the FAN-8056-2U-G6 fan module:

· The 12LFF drive backplane, 25SFF drive backplane, two 8SFF UniBay drive backplanes, or three 8SFF UniBay drive backplanes are installed along with processors with a TDP of more than 240 W are all installed (except for liquid-cooled modules).

· The processors with a TDP of more than 200 W are installed and drives are installed at the server rear.

· The A2, A30, A40, A100, or A16 GPU modules are installed.

· The MBF2H332A-AENOT or MBF2H536C-CEUOT network adapter is installed.

· The MCX623106AN-CDAT or MCX623436AN-CDAB OCP3.0 network adapter is installed.

· When configuring an OCP3.0 network adapter with a bandwidth of 100 Gb/s or higher on OCP1, it is necessary to configure an OCP fan.

Removing a fan module

1. Power off the server. For more information, see "Powering off the server."

2. Remove the server from the rack. For more information, see "Removing the server from a rack."

3. Remove the access panel:

a. Press the button on the locking lever and then lift the locking lever.

The access panel automatically slides to the server rear.

b. Lift the access panel to remove it from the server.

4. Remove a fan module. Lift the fan module handle and hold the handle to pull the fan module out of the slot.

Installing a fan module

1. Install a new fan module. Insert the fan module into the slot and press the fan module until it is secured in position.

2. Install the access panel:

a. Place the access panel onto the server.

b. Slide the access panel to the server front and close the locking lever. The access panel snaps into place.

3. Rack-mount the server if the server has been removed. For more information, see "Rack-mounting the server."

4. Connect the power cord if the power cord has been disconnected. For more information, see "Connecting the power cord."

5. Power on the server if the server has been powered off. For more information, see "Powering on the server."

Installing and setting up a TCM or TPM

Trusted platform module (TPM) is a microchip embedded in the system board. It stores encryption information (such as encryption keys) for authenticating server hardware and software. The TPM operates with drive encryption programs such as Microsoft Windows BitLocker to provide operating system security and data protection. For information about Microsoft Windows BitLocker, visit the Microsoft website at http://www.microsoft.com.

Trusted cryptography module (TCM) is a trusted computing platform-based hardware module with protected storage space, which enables the platform to implement password calculation.

Installation and setup flowchart

Figure 19 TCM/TPM installation and setup flowchart

Guidelines

· Do not remove an installed TCM or TPM. Once installed, the module becomes a permanent part of the system board.

· If you want to replace the failed TCM or TPM, remove the system board, and then contact H3C Support to replace the TCM or TPM and the system board.

· When installing or replacing hardware, H3C technicians cannot configure the TCM or TPM or enter the recovery key. For security reasons, only the user can perform the tasks.

· When replacing the system board, do not remove the TCM or TPM from the system board. H3C will provide a TCM or TPM with a spare system board for the replacement.

· Any attempt to remove an installed TCM or TPM from the system board breaks or disfigures the TCM or TPM security rivet. Upon locating a broken or disfigured rivet on an installed TCP or TPM, administrators should consider the system compromised and take appropriate measures to ensure the integrity of the system data.

· H3C is not liable for blocked data access caused by improper use of the TCM or TPM. For more information, see the encryption technology feature documentation provided by the operating system.

Prerequisites

Take the following ESD prevention measures:

· Wear antistatic clothing.

· Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

· Do not wear any conductive objects, such as jewelry or watches.

When you replace a component, examine the slot and connector for damages. Make sure the pins are not damaged (bent for example) and do not contain any foreign objects.

Installing a TCM or TPM

1. Power off the server. For more information, see "Powering off the server."

2. Remove the server from the rack. For more information, see "Removing the server from a rack."

3. Remove the access panel:

a. Press the button on the locking lever and then lift the locking lever.

The access panel automatically slides to the server rear.

b. Lift the access panel to remove it from the server.

4. Remove all riser cards that hider the installation.

5. Install the TCM or TPM.

The installation procedure is the same for a TPM and a TCM. The following information uses a TPM to show the procedure:

a. Press the TPM into the TPM connector on the system board.

b. Insert the rivet pin.

c. Insert the security rivet into the hole in the rivet pin and press the security rivet until it is firmly seated.

6. Install the removed riser cards, if any.

7. Install the access panel:

a. Place the access panel onto the server.

b. Slide the access panel to the server front and close the locking lever. The access panel snaps into place.

8. Rack-mount the server. For more information, see "Rack-mounting the server."

9. Connect the power cord. For more information, see "Connecting the power cord."

10. Power on the server. For more information, see "Powering on the server."

Enabling the TCM or TPM in the BIOS

1. Access the BIOS utility. For information about how to enter the BIOS utility, see the BIOS user guide.

2. Select Advanced > Trusted Computing, and press Enter.

3. Enable TCM or TPM. By default, the TCM and TPM are enabled for a server.

If the server is installed with a TPM, select TPM State > Enabled, and then press Enter.

If the TPM is installed with a TCM, select TCM State > Enabled, and then press Enter.

4. Log in to HDM to verify that the TCM or TPM is operating correctly. For more information, see HDM2 online help.

Configuring encryption in the operating system

For more information about this task, see the encryption technology feature documentation that came with the operating system.

The recovery key/password is generated during BitLocker setup, and can be saved and printed after BitLocker is enabled. When using BitLocker, always retain the recovery key/password. The recovery key/password is required to enter Recovery Mode after BitLocker detects a possible compromise of system integrity or firmware or hardware change.

For security purposes, follow these guidelines when retaining the recovery key/password:

· Always store the recovery key/password in multiple locations.

· Always store copies of the recovery key/password away from the server.

· Do not save the recovery key/password on the encrypted hard drive.

For more information about Microsoft Windows BitLocker drive encryption, visit the Microsoft website at http://technet.microsoft.com/en-us/library/cc732774.aspx.

Replacing a power supply

The power supplies are hot swappable.

Guidelines

· To avoid damage to hardware, use only H3C approved power supplies.

· The server supports 1+1 power supply redundancy.

· The power supplies installed on the server must be the same model. If they differ in model, HDM would raise an alarm.

· The power supplies are hot swappable.

· The system provides an overtemperature mechanism for power supplies. The power supplies automatically turn off when they encounter an overtemperature situation and automatically turn on when the overtemperature situation is removed.

For more information about the specifications of power supplies, see the power supply manuals for them.

Prerequisites

Take the following ESD prevention measures:

· Wear antistatic clothing.

· Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

· Do not wear any conductive objects, such as jewelry or watches.

When you replace a component, examine the slot and connector for damages. Make sure the pins are not damaged (bent for example) and do not contain any foreign objects.

Removing a power supply

If two operating power supplies are present and the server rear has sufficient space for replacement, you can replace one of the power supplies without powering off the server.

To remove a power supply:

1. Power off the server. For more information, see "Powering off the server."

2. Remove the server from the rack. For more information, see "Removing the server from a rack."

3. Remove the power cord from the power supply:

a. Press the tab to disengage the ratchet from the tie mount, slide the cable clamp outward, and then release the tab.

b. Open the cable clamp and remove the power cord out of the clamp.

c. Unplug the power cord.

4. Uninstall the CMA on the side of the power supply, if any:

a. Take out cables that hinder the replacement from the cable baskets of the CMA. During this operation, make sure cables required for server operation remain connected.

b. Press the tab on the CMA connector next to the power supply and then pull the connector out.

5. Remove the power supply. Holding the power supply by its handle and pressing the retaining latch with your thumb, pull the power supply slowly out of the slot.

Installing a power supply

If only one power supply is present, install the new power supply in the slot for the replaced power supply.

To install a power supply:

1. Install a new power supply. Push the power supply into the slot until it snaps into place.

2. Installed the removed CMA, if any.

3. Rack-mount the server if the server has been removed. For more information, see "Rack-mounting the server."

4. Connect the power cord if the power cord has been disconnected. For more information, see "Connecting the power cord."

5. Power on the server if the server has been powered off. For more information, see "Powering on the server."

Replacing the system battery

WARNING!

To avoid bodily injury from hot surfaces, allow the server and its internal modules to cool before touching them.

The server comes with a system battery (Panasonic BR2032) installed on the system board, which supplies power to the real-time clock and has a lifespan of 3 to 5 years. If the server no longer automatically displays the correct date and time, you might need to replace the battery. As a best practice, use the Panasonic BR2032 battery to replace the old one.

NOTE:

The BIOS will restore to the default settings after the replacement. You must reconfigure the BIOS to have the desired settings, including the system date and time. For more information, see the BIOS user guide for the server.

Prerequisites

Take the following ESD prevention measures:

· Wear antistatic clothing.

· Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

· Do not wear any conductive objects, such as jewelry or watches.

When you replace a component, examine the slot and connector for damages. Make sure the pins are not damaged (bent for example) and do not contain any foreign objects.

Removing the system battery

1. Power off the server. For more information, see "Powering off the server."

2. Remove the server from the rack. For more information, see "Removing the server from a rack."

3. Remove the access panel:

a. Press the button on the locking lever and then lift the locking lever.

The access panel automatically slides to the server rear.

b. Lift the access panel to remove it from the server.

4. Remove the system battery. Pinch the system battery by its top edge and the battery will disengage from the battery holder.

NOTE:

For environment protection purposes, dispose of the used-up system battery at a designated site.

Installing the system battery

1. Install the system battery. Insert the system battery with the plus sign "+" facing up into the system battery holder, and press down the battery to secure it into place.

2. Install the access panel:

a. Place the access panel onto the server.

b. Slide the access panel to the server front and close the locking lever. The access panel snaps into place.

3. Rack-mount the server. For more information, see "Rack-mounting the server."

4. Connect the power cord. For more information, see "Connecting the power cord."

5. Power on the server. For more information, see "Powering on the server."

6. Access the BIOS to reconfigure the system date and time. For more information, see the BIOS user guide for the server.

Replacing a rear 4GPU module

Prerequisites

· Take the following ESD prevention measures:

¡ Wear antistatic clothing.

¡ Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

¡ Do not wear any conductive objects, such as jewelry or watches.

· When you replace a component, examine the slot and connector for damages. Make sure the pins are not damaged (bent for example) and do not contain any foreign objects.

Removing a rear 4GPU module

1. Power off the server. For more information, see "Powering off the server."

2. Remove the server from the rack. For more information, see "Removing the server from a rack."

3. Remove the access panel:

a. Press the button on the locking lever and then lift the locking lever.

The access panel automatically slides to the server rear.

b. Lift the access panel to remove it from the server.

4. (Optional.) Disconnect all cables that hinder the replacement, if any.

5. Remove the fastening screws at both sides of the 4GPU module.

6. Remove the rear 4GPU module where the GPU module resides. Lift the rear 4GPU module to remove it out of the chassis.

7. Remove the GPU module from the rear 4GPU module:

a. Disconnect the cable from the GPU module, if any.

b. Pull the GPU module out from the slot.

Installing a rear 4GPU module

1. Install a GPU module on the rear 4GPU module:

a. Insert the GPU module into the PCIe slot along the guide rails.

b. Connect the GPU module power cord.

c. Connect the rear 4GPU module power cord.

2. (Optional.) Reconnect other cables to the rear 4GPU module.

3. Install the rear 4GPU module on the server. Insert the rear 4GPU module into the chassis along the slot.

4. Install the fastening screws at both sides of the 4GPU module.

5. Install the access panel:

a. Place the access panel onto the server.

b. Slide the access panel to the server front and close the locking lever. The access panel snaps into place.

6. Rack-mount the server. For more information, see "Rack-mounting the server."

7. Connect the power cord.

8. Power on the server. For more information, see "Powering on the server."

Installing a GPU module on the rear 4GPU module

Prerequisites

· Take the following ESD prevention measures:

¡ Wear antistatic clothing.

¡ Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

¡ Do not wear any conductive objects, such as jewelry or watches.

· When you replace a component, examine the slot and connector for damages. Make sure the pins are not damaged (bent for example) and do not contain any foreign objects.

Removing a rear 4GPU module

1. Power off the server. For more information, see "Powering off the server."

2. Remove the server from the rack. For more information, see "Removing the server from a rack."

3. Remove the access panel:

a. Press the button on the locking lever and then lift the locking lever.

The access panel automatically slides to the server rear.

b. Lift the access panel to remove it from the server.

4. (Optional.) Disconnect all cables that hinder the removal, if any.

5. Remove the fastening screws at both sides of the 4GPU module.

6. Remove the rear 4GPU module that is not installed with a GPU module. Lift the rear 4GPU module to remove it out of the chassis.

Installing a rear 4GPU module

1. Use a screwdriver to remove the mounting screw from a 4GPU module blank, and then remove the blank.

2. Install a GPU module on the rear 4GPU module:

a. Insert the GPU module into the PCIe slot along the guide rails.

b. Connect one end of the power cord to the GPU module based on the power cord label.

c. Connect the other end of the power cord to the 4GPU module.

3. (Optional.) Reconnect other cables to the rear 4GPU module.

4. Insert the rear 4GPU module into the chassis along the slot.

5. Install the fastening screws at both sides of the 4GPU module.

6. Install the access panel:

a. Place the access panel onto the server.

b. Slide the access panel to the server front and close the locking lever. The access panel snaps into place.

7. Rack-mount the server. For more information, see "Rack-mounting the server."

8. Connect the power cord.

9. Power on the server. For more information, see "Powering on the server."

Removing and installing a blank

Install blanks over the empty slots if the following modules are not present and remove blanks before you install the following modules:

· Drives.

· Drive backplanes.

· Power supplies.

· Riser cards.

· PCIe modules.

· OCP network adapter.

Prerequisites

Take the following ESD prevention measures:

· Wear antistatic clothing.

· Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

· Do not wear any conductive objects, such as jewelry or watches.

Procedures

Use Table 18 as a guide when you remove or install a blank for a hardware option.

Table 18 Removing or installing a blank

Task	Procedure
Remove a drive blank.	Press the latches on the drive blank inward with one hand, and pull the drive blank out of the slot.
Install a drive blank.	Insert the drive blank into the slot.
Remove a drive backplane blank.	From the inside of the chassis, use a flat-head screwdriver to push aside the clip of the blank and push the blank outward to disengage the blank. Then, pull the blank out of the server.
Install a drive backplane blank.	Insert the drive backplane blank into the slot and push the blank until you hear a click.
Remove a power supply blank.	Hold and pull the power supply blank out of the slot.
Install a power supply blank.	Insert the power supply blank into the slot with the TOP mark facing up.
Remove a riser card blank.	Lift the riser card blank to remove it from the connector.
Install a riser card blank.	Insert the riser card blank into the slot along guide rails.
Remove a PCIe module blank.	Open the retaining latch of the riser card and then lift the blank upwards.
Install a PCIe module blank	Insert the PCIe module blank into the slot and then close the retaining latch of the riser card.
Remove an OCP network adapter blank	Pinch the OCP network adapter blank by the small handle, and pull the blank out.
Install an OCP network adapter blank	Insert the OCP network adapter blank into the slot.

Connecting internal cables

Guidelines

Follow these guidelines when connecting the internal cables:

· Do not route the cables above the removable components, such as DIMMs.

· Route the internal cables without hindering installation or removal of other components or hindering other internal components.

· Route the cables neat and tidy in their own fixed spaces. Make sure the cables will not be squeezed or scratched by other internal components.

· Do not pull the connectors when routing the cables.

· Do not use a cable tie to bundle an excessive number of cables.

· Appropriately bind long cables. Coil and use cable ties to secure unused cables.

· Connect the drive cables until they click into place.

· Remove the cap (if any) from the target cable connector before connecting a cable to it.

Connecting drive cables

Drive cables include SAS/SATA data cables, NVMe data cables, power cords, and AUX cables. The server supports multiple drive configurations. This section takes the following two typical drive configurations as examples to help users understand the cabling schemes for drives. For cabling schemes for other drive configurations, contact Technical Support.

NOTE:

Compared with the AUX cables and power cords, more data cables (including SAS/SATA and NVMe data cables) are required and the cabling methods are more complicated. This section provides code information for data cables and you can use the information to identify cables and their connection methods.

· 12LFF (8 SAS/SATA + 4 UniBay) drives at the front

· 12LFF drives at the front + 2SFF UniBay drives at the rear

· 12LFF (4 SAS/SATA + 8 UniBay, LSI Expander) drives at the front

· 8SFF UniBay+8SFF UniBay+8SFF UniBay drives at the front

· 25SFF (17 SAS/SATA + 8 UniBay) drives at the front

12LFF (8 SAS/SATA + 4 UniBay) drives at the front

1. Connect NVMe data cables for the 12LFF drives at the front.

Figure 20 Connecting NVMe data cables for the 12LFF drives at the front

No.	Cable type	Cable code	Description
1	NVMe data cable	0404A20E	From connectors NVME A3 and NVME A4 on the front backplane to connector C2-P0C on the storage controller.
2	NVMe data cable	0404A1XC	From connector NVME A1/A2 on the front backplane to connector C1-P0A on the storage controller.

2. Connect a SAS/SATA cable for the 12LFF drives at the front.

Figure 21 Connecting a SAS/SATA cable for the 12LFF drives at the front

No.	Cable type	Cable code	Description
1	SAS/SATA data cable	0404A1Y1	From connector SAS PORT1 on the front drive backplane to connector C1-P0C on the system board
4	AUX cable	From connector AUX on the front drive backplane to connector AUX1 on the system board
5	Power cord	From connector PWR1 on the front drive backplane to connector PWR1 on the system board

3. Connect an AUX cable for the 12LFF drives at the front.

Figure 22 Connecting an AUX cable for the 12LFF drives at the front

No.	Cable type	Description
1	AUX cable	From connector AUX on the front drive backplane to connector AUX1 on the system board

4. Connect power cords for the 12LFF drives at the front.

Figure 23 Connecting power cords for the 12LFF drives at the front

No.	Cable type	Description
1	Power cord	From connector PWR2 on the front drive backplane to connector PWR2 on the system board
2	Power cord	From connector PWR1 on the front drive backplane to connector PWR1 on the system board

12LFF drives at the front + 2SFF UniBay drives at the rear

1. Connect SAS/SATA data cables for the 12LFF drives at the front.

Figure 24 Connecting an SAS/SATA data cable for the 12LFF drives at the front

No.	Cable type	Cable code	Description
1	SAS/SATA data cable	0404A1Y1	From connector SAS PORT1 on the front backplane to connector C1-P0C on the storage controller.
2	SAS/SATA data cable	0404A1XT	From connector SAS PORT2 on the front backplane to connector C2-P0A on the storage controller.

2. Connect an AUX cable for the 12LFF drives at the front.

Figure 25 Connecting an AUX cable for the 12LFF drives at the front

No.	Cable type	Cable code	Description
1	AUX cable	From connector AUX on the front drive backplane to connector AUX1 on the system board

3. Connect power cords for the 12LFF drives at the front.

Figure 26 Connecting power cords for the 12LFF drives at the front

No.	Cable type	Description
1	Power cord	From connector PWR1 on the front drive backplane to connector PWR1 on the system board
2	Power cord	From connector PWR2 on the front drive backplane to connector PWR2 on the system board

4. Connect an NVME data cable for the 2SFF UniBay drives at the rear.

Figure 27 Connecting an NVME data cable for the 2SFF UniBay drives at the rear

No.	Cable type	Cable code	Description
1	NVMe data cable	0404A20E	From connector NVME on the front drive backplane to connector C2-P3C on the system board

5. Connect an AUX data cable for the 2SFF UniBay drives at the rear.

Figure 28 Connecting an AUX data cable for the 2SFF UniBay drives at the rear

No.	Cable type	Description
1	AUX cable	From connector AUX on the front drive backplane to connector AUX5 on the system board

6. Connect a power cord for the 2SFF UniBay drives at the rear.

Figure 29 Connecting a power cord for the 2SFF UniBay drives at the rear

No.	Cable type	Description
1	Power cord	From connector PWR on the front drive backplane to connector PWR5 on the system board

12LFF (4 SAS/SATA + 8 UniBay, LSI Expander) drives at the front

1. Connect NVMe data cables for the 12LFF drives at the front.

Figure 30 Connecting NVMe data cables for the 12LFF drives at the front

No.	Cable type	Cable code	Description
1	NVMe data cable	0404A1XJ	From connector NVME B3/B4 on the front drive backplane to connector C2-P2C on the system board
2	NVMe data cable	0404A1XK	From connector NVME B1/B2 on the front drive backplane to connector C2-P2A on the system board
3	NVMe data cable	0404A1XF	From connector NVME A3/A4 on the front drive backplane to connector C1-P0C on the system board
4	NVMe data cable	0404A1XC	From connector NVME A1/A2 on the front drive backplane to connector C1-P0A on the system board

2. Connect an SAS/SATA data cable for the 12LFF drives at the front.

Figure 31 Connecting an SAS/SATA data cable for the 12LFF drives at the front

No.	Cable type	Cable code	Description
1	SAS/SATA data cable	0404A1Y1	From connector SAS PORT on the front drive backplane to connector C0 on the storage controller

3. Connect power cords and an AUX cable for the 12LFF drives at the front.

Figure 32 Connecting AUX cables for the 12LFF drives at the front

No.	Cable type	Description
1	Power cord	From connector PWR2 on the front drive backplane to connector PWR2 on the system board
2	Power cord	From connector PWR1 on the front drive backplane to connector PWR1 on the system board
3	AUX cable	From connector AUX on the front drive backplane to connector AUX1 on the system board

8SFF UniBay+8SFF UniBay+8SFF UniBay drives at the front

1. Connect NVMe data cables for the 8SFF UniBay+8SFF UniBay+8SFF UniBay drives at the front.

Figure 33 Connecting NVMe data cables for 8SFF UniBay+8SFF UniBay+8SFF UniBay drives at the front

No.	Cable type	Cable code	Description
1	NVMe data cable	0404A1WY	From connector NVME B3/B4 on the front drive backplane to connector C2-P3C on the system board
2	NVMe data cable	0404A1QS	From connector NVME B1/B2 on the front drive backplane to connector C2-P3A on the system board
3	NVMe data cable	0404A1XD	From connector NVME A3/A4 on the front drive backplane to connector C2-P2C on the system board
4	NVMe data cable	0404A1XJ	From connector NVME A1/A2 on the front drive backplane to connector C2-P2A on the system board
5	NVMe data cable	0404A1XD	From connector NVME B3/B4 on the front drive backplane to connector C2-P0C on the system board
6	NVMe data cable	0404A1XF	From connector NVME B1/B2 on the front drive backplane to connector C2-P0A on the system board
7	NVMe data cable	0404A1XC	From connector NVME A3/A4 on the front drive backplane to connector C1-P2C on the system board
8	NVMe data cable	0404A1XF	From connector NVME A1/A2 on the front drive backplane to connector C1-P2A on the system board
9	NVMe data cable	0404A1XJ	From connector NVME B3/B4 on the front drive backplane to connector C1-P0C on the system board
10	NVMe data cable	0404A1XD	From connector NVME B1/B2 on the front drive backplane to connector C1-P0A on the system board
11	NVMe data cable	0404A1QS	From connector NVME A3/A4 on the front drive backplane to connector C1-P1C on the system board
12	NVMe data cable	0404A1QS	From connector NVME A1/A2 on the front drive backplane to connector C1-P1A on the system board

2. Connect AUX cables for the 8SFF UniBay+8SFF UniBay+8SFF UniBay drives at the front.

Figure 34 Connecting AUX cables for 8SFF UniBay+8SFF UniBay+8SFF UniBay drives at the front

No.	Cable type	Description
1	AUX cable	From connector AUX on the front drive backplane to connector AUX3 on the system board
2	AUX cable	From connector AUX on the front drive backplane to connector AUX2 on the system board
3	AUX cable	From connector AUX on the front drive backplane to connector AUX1 on the system board

3. Connect power cords for the 8SFF UniBay+8SFF UniBay+8SFF UniBay drives at the front.

Figure 35 Connecting AUX cables for 8SFF UniBay+8SFF UniBay+8SFF UniBay drives at the front

No.	Cable type	Description
1	Power cord	From connector PWR on the front drive backplane to connector PWR 3 on the system board
2	Power cord	From connector PWR on the front drive backplane to connector PWR 2 on the system board
3	Power cord	From connector PWR on the front drive backplane to connector PWR 1 on the system board

25SFF (17 SAS/SATA + 8 UniBay) drives at the front

1. Connect NVMe data cables for the 25SFF drives at the front.

Figure 36 Connecting NVMe data cables for the 25SFF drives at the front

No.	Cable type	Cable code	Description
1	NVMe data cable	0404A1XG	From connector NVME4 on the front drive backplane to connector C2-P2C on the system board
2	NVMe data cable	0404A1XK	From connector NVME3 on the front drive backplane to connector C2-P2A on the system board
3	NVMe data cable	0404A1XD	From connector NVME2 on the front drive backplane to connector C1-P0C on the system board
4	NVMe data cable	0404A1XF	From connector NVME1 on the front drive backplane to connector C1-P0A on the system board

2. Connect an SAS/SATA cable for 25SFF drives at the front.

Figure 37 Connecting an SAS/SATA cable for 25SFF drives at the front

No.	Cable type	Cable code	Description
1	SAS/SATA cable	0404A1QM	From connector SAS PORT1 on the front drive backplane to connector C0 on the storage controller

3. Connect an AUX cable for the 25SFF drives at the front.

Figure 38 Connecting an AUX cable for the 25SFF drives at the front

No.	Cable type	Description
1	AUX cable	From connector AUX on the front drive backplane to connector AUX1 on the system board

4. Connect power cords for the 25SFF drives at the front.

Figure 39 Connecting power cords for the 25SFF drives at the front

No.	Cable type	Description
1	Power cord	From connector PWR3 on the front drive backplane to connector PWR3 on the system board
2	Power cord	From connector PWR2 on the front drive backplane to connector PWR2 on the system board
3	Power cord	From connector PWR1 on the front drive backplane to connector PWR1 on the system board

Connecting cables for the front M.2 SSD expander module

Figure 40 Connecting cables for the front M.2 SSD expander module

No.

Cable type

Cable code

Description

SAS/SATA/NVMe data & AUX cable

0404A1Y6

· From connector M.2 PORT on the M.2 SSD expander module to connector M.2 AUX(FRONT) on the system board

· From connector M.2 PORT on the M.2 SSD expander module to connector C1-P0A on the system board

Connecting cables for OCP 3.0 network adapter 1

OCP 3.0 network adapter 1 supports three types of cables with cable codes as 0404A1YH, 0404A1YJ, and 0404A1YM. Figure 41 connects cable 0404A1YH for OCP 3.0 network adapter 1 as an example. For information about how to connect cables for OCP network adapters in other slots, contact Technical Support.

Figure 41 Connecting cables for OCP 3.0 network adapter 1

Cable type	Cable code	Description
OCP 3.0 network adapter 1 cable	0404A1YH	From the end with label M1 to connector OCP1 AUX on the system board
		From the end with label M2 to connector OCP1 PWR on the system board
		From the end with label M3 to connector C1-P1A on the system board
		From the end with label M4 to connector C1-P1C on the system board
OCP 3.0 network adapter 1 cable	0404A1YJ	From the end with label M1 to connector OCP1 AUX on the system board
		From the end with label M2 to connector OCP1 PWR on the system board
		From the end with label M3 to connector C1-P1A on the system board
OCP 3.0 network adapter 1 cable	0404A1YM	From the end with label M1 to connector OCP1 AUX on the system board
		From the end with label M2 to connector OCP1 PWR on the system board
		From the end with label M3 to connector RISER1 PCIe x16 on the system board. This cabling scheme is available only when 24 NVMe drives are installed.

Connecting cables for riser cards

Some riser cards can provide additional PCIe links for the slots on the card by connecting to the system board. This section introduces the cabling schemes for these riser cards. For detailed information about PCIe riser connectors, see "Riser card and PCIe module compatibility."

For information about PCIe riser bay numbering, see rear panel view in "Appendix A Server specifications." The cabling schemes are similar for these riser cards and this section connects cables for PCIe riser connectors 3 and 4 as an example.

Figure 42 Connecting cables for riser 3 assembly module and riser 4 assembly module

No.	Riser connector	Cable type	Cable code	Description
1	Riser3	PWR	0404A1YK (two cables)	From the end with label S2 of the PWR cable in slot 7 to connector PWR6 on the system board
		PCIe		From the end with label S1 of the PCIe cable in slot 7 to connector C2-P3A on the system board
		PWR		From the end with label S2 of the PWR cable in slot 8 to connector PWR7 on the system board
		PCIe		From the end with label S1 of the PCIe cable in slot 8 to connector C2-P3C on the system board
2	Riser4	PWR	0404A1YF (two cables)	From the end with label S2 of the PWR cable in slot 9 to connector PWR8 on the system board
		PCIe		From the end with label S1 of the PCIe cable in slot 9 to connector C2-P2A on the system board
		PWR		From the end with label S2 of the PWR cable in slot 10 to connector PWR5 on the system board
		PCIe		From the end with label S1 of the PWR cable in slot 10 to connector C2-P2C on the system board

Figure 43 Connecitng cables for an FHFL riser 4 assembly module

No.	Riser connector	Cable type	Cable code	Description
1	Riser3	PWR	0404A1YL (slot9) + 0404A1YG (slot 10)	From the end with label S3 of the PWR cable in slot 9 to connector PWR8 on the system board
		PCIe		From the end with label S1 of the PCIe cable in slot 9 to connector C2-P2A on the system board
		PCIe		From the end with label S2 of the PCIe cable in slot 9 to connector C2-P2C on the system board
		PWR		From the end with label S3 of the PWR cable in slot 10 to connector PWR5 on the system board
		PCIe		From the end with label S1 of the PCIe cable in slot 10 to connector C2-P3A on the system board
		PCIe		From the end with label S2 of the PCIe cable in slot 10 to connector C2-P3C on the system board

Connecting the supercapacitor cable

Connecting cables for the rear 4GPU module

Figure 44 Connecting data cables for the rear 4GPU module

No.	Cable type	Cable code	Description
1	PCIe data cable	0404A1Y8	From rear GPU module S4 in slot 14 to connector C2-P2C on the system board
2	PCIe data cable	0404A1Y8	From rear GPU module S3 in slot 14 to connector C2-P2A on the system board
3	PCIe data cable	0404A1Y8	From rear GPU module S2 in slot 13 to connector C2-P0C on the system board
4	PCIe data cable	0404A1Y8	From rear GPU module S1 in slot 13 to connector C2-P0A on the system board
5	PCIe data cable	0404A1Y9	From rear GPU module S4 in slot 12 to connector C1-P2C on the system board
6	PCIe data cable	0404A1Y9	From rear GPU module S3 in slot 12 to connector C1-P2A on the system board
7	PCIe data cable	0404A1Y9	From rear GPU module S2 in slot 11 to connector C1-P0C on the system board
8	PCIe data cable	0404A1Y9	From GPU module S1 in slot 11 to connector C1-P0A on the system board

Figure 45 Connecting power cords for the rear 4GPU module

Connecting chassis ear cables

Figure 46 Connecting chassis ear cables

(1) Left chassis ear cable	(2) Right chassis ear cable

Maintenance

The following information describes the guidelines and tasks for daily server maintenance.

Guidelines

· Keep the equipment room clean and tidy. Remove unnecessary devices and objects from the equipment room.

· Make sure the temperature and humidity in the equipment room meet the server operating requirements.

· Regularly check the server from HDM for operating health issues.

· Keep the operating system and software up to date as required.

· Make a reliable backup plan:

¡ Back up data regularly.

¡ If data operations on the server are frequent, back up data as needed in shorter intervals than the regular backup interval.

¡ Check the backup data regularly for data corruption.

· Stock spare components on site in case replacements are needed. After a spare component is used, prepare a new one.

· Keep the network topology up to date to facilitate network troubleshooting.

Maintenance tools

The following are major tools for server maintenance:

· Hygrothermograph—Monitors the operating environment of the server.

· HDM and FIST—Monitors the operating status of the server.

Maintenance tasks

Observing LED status

Observe the LED status on the front and rear panels of the server to verify that the server modules are operating correctly. For more information about the status of the front and rear panel LEDs, see "Front panel" and "Rear panel."

Monitoring the temperature and humidity in the equipment room

Use a hygrothermograph to monitor the temperature and humidity in the equipment room.

The temperature and humidity in the equipment room must meet the server requirements described in "Environment requirements."

Examining cable connections

Verify that the cables and power cords are correctly connected.

Guidelines

· Do not use excessive force when connecting or disconnecting cables.

· Do not twist or stretch the cables.

· Organize the cables appropriately. For more information, see "Cabling guidelines."

Checklist

· The cable type is correct.

· The cables are correctly and firmly connected and the cable length is appropriate.

· The cables are in good condition and are not twisted or corroded at the connection point.

H3C UniServer R4950 G6 Server User Guide-6W100

Safety information

Preventing electrostatic discharge

Grounding methods to prevent electrostatic discharge

Servers not installed with liquid-cooled modules

Servers installed with liquid-cooled modules

Corrosive gas concentration requirements

Requirements for the data center equipment room

Requirements for the non-data center equipment room

Guidelines for controlling corrosive gases

Requirements for the data center equipment room

Requirements for the non-data center equipment room

Guidelines for controlling cleanliness

About this task

Procedure

About this task

Procedure

Guidelines

Procedure

Securing cables to cable management brackets

Securing cables to slide rails by using cable straps

Powering on the server by pressing the power on/standby button

Powering on the server from the HDM Web interface

Powering on the server from the remote console interface

Configuring automatic power-on

Powering off the server from its operating system

Powering off the server by pressing the power on/standby button

Powering off the server forcedly by pressing the power on/standby button

Powering off the server from the HDM Web interface

Powering off the server from the remote console interface

Replacing a liquid-cooled module

Installing a liquid-cooled module

DIMM frequency

Installation guidelines