Configure VM fault tolerance
VM fault tolerance (FT) provides continuous availability for applications. When VM FT is enabled for a VM (primary VM), a secondary VM (SVM) is created for that primary VM (PVM). When the physical host where the PVM resides fails, the SVM can take over service immediately. The system synchronizes data between the two VMs only when the data on them is inconsistent.
In a resource list, a PVM and an SVM are
identified by the 
and 
icons, respectively. On the VM
details page, they are identified as a primary node and a secondary node,
respectively.
Restrictions and guidelines
After VM FT is enabled, you cannot edit a PVM or SVM.
When you start or shut down a PVM, the SVM is started or shut down automatically.
IPv6 VMs do not support VM FT. You cannot select an IPv6 vSwitch for an SVM.
Enable VM FT
On the top navigation bar, click Resources.
From the left navigation pane, select Compute > Host Pool Name > Host Name > VM Name or Compute > Host Pool Name > Cluster Name > Host Name > VM Name.
Click More in the upper right corner of the page, and then select Enable FT.
Configure the SVM parameters as described in "Parameters."
Click OK.
After you create a PVM, CVM will create an SVM in the specified host and storage pool. The name of the SVM is in the format of <PVM name>_slave.
Disable VM FT
On the top navigation bar, click Resources.
From the left navigation pane, select Compute > Host Pool Name > Host Name > VM Name or Compute > Host Pool Name > Cluster Name > Host Name > VM Name.
Click More in the upper right corner of the page, and then select Disable FT.
Click OK.
After VM FT is disabled, the SVM will be removed from CVM.
Parameters
Select Host: Select a host for the SVM. You cannot select the host where the PVM resides.
Select Storage: Select the destination storage pool where the source storage file is to be backed up. This file will be used by the SVM. You must select a destination storage pool for each source storage file if multiple source storage files exist.