You can create disk pools.
Select Disk Pools.
Click Create.
Configure the disk pool parameters.
Click OK.
Disk Pool Name: Enter a name for the disk pool, which cannot be the same as any node pool name, rack name, or hostname.
Service Type: Select a storage service type for the disk pool, Options include Block Storage, File Storage, File Storage-Data Pool, File Storage-Metadata Pool, Object Storage, Object Storage-Data Pool, and Object Storage-Metadata Pool.
Provisioning Mode: Select a volume provisioning mode. This parameter determines how space is allocated to the block devices created in a data pool that uses this storage pool and whether resource overcommitment is allowed. This parameter is required only when the storage service type is block storage.
Thick—Allocates the specified maximum storage space to a block device when the block device is created. The capacity of a block device in a data pool cannot exceed the available capacity of the data pool.
Thin—Allocates space to a block device on demand. The capacity assigned to a block device when it is created can exceed the available capacity of the data pool.
Storage Type: Select a storage type. Options include Standard and Infrequent. This parameter is required only when the storage service type is object storage-data pool.
Standard—The standard storage pool is applicable to frequently accessed data. Use an HDD disk for standard storage, if the object storage is not supposed to support infrequent storage.
Infrequent—The infrequent storage pool is applicable to infrequently accessed data. Use a SSD disk for standard storage and a HDD disk for infrequent storage only if the object storage is supposed to support infrequent storage.
Restore Speed: Select a data restoration policy to use when data loss occurs in the disk pool. The policy determines the data restoration speed. Options include Reconstruction First, Self-adaptive, and Service First, for which the data restoration speed is in descending order.
Reconstruction First: When data loss occurs in the disk pool, the system gives priority to data restoration and restores data at a high speed.
Self-adaptive: When data loss occurs in the disk pool, the system dynamically adjusts the data restoration speed according to the storage service conditions.
Service First: When data loss occurs in the disk pool, the system gives priority to storage services and restores data at a low speed.
Node Pools: Select node pools.
Encryption: Select whether to enable the encryption service for the disk pool. After you enable this feature for a disk pool, disks in the disk pool will be encrypted.
Data Disk Type: Select the type of disks to store data. Only disks of the selected type can be added to the disk pool.
Rotational Speed: Specify the maximum rotation speed of the disks allowed to join the disk pool. This parameter is not available to SSDs.
Metadata Disk Type (Data Disk): Select the type of metadata disks for the storage system to manage user data. To meet the high performance requirements of user data for frequent read/write operations, deploy the user data on metadata disks whose type are SSD as a best practice.
Metadata Protection Level: Select a metadata protection level, which affects the metadata storage method. This parameter is required when the metadata disk type is SSD.
Standard: Cache and metadata are stored in metadata disks in RAID0 mode.
Advanced: Cache and metadata are stored in metadata disks in RAID1 mode.
Max Number of Metadata Disks: Set the maximum number of data disks supported by a metadata disk. This parameter is required when the metadata disk type is SSD.
Cache Disk Type: Select whether to enable disk caching.
Off—Disables disk caching.
SSD—Enables disk caching to provide SSD cache disks for HDD data disks.