You can power off a Virtual SAN cluster.
If the vCenter Server VM is running on the Virtual SAN cluster, migrate the VM to the first host, or record the host where it is currently running.
- Power off all virtual machines that are running on the Virtual SAN cluster.
The vCenter Server virtual machine must be powered off last.
- Place all ESXi hosts that compose the cluster in maintenance mode.
Run the esxcli command to set the Virtual SAN mode for entering the maintenance state.
esxcli system maintenanceMode set -e true -m noAction
- Power off the ESXi hosts.