Protecting the vCSA is another key point to ensure BC. Technically, vSphere can work without vCenter Server but advanced features, such as vMotion, vSphere HA, and vSphere DRS won't be available to keep your VM in a protected state.
If the vCSA gets corrupted or fails, you should restore the vCenter Server functionality as soon as possible to avoid worse problems. What happens if an ESXi host also fails? The running VM on that host will stop working, because the vSphere HA service is not available.
vSphere vCSA 6.5 introduces a new feature that allows a file-based backup of the vCSA and the PSC to be performed through the vCenter Server Appliance Management Interface. This speeds up the restore process.
The backup file includes the core vCSA configuration, inventory, and historical data of your choice. The backup file is not stored in the vCSA...