While most cluster-related information can be obtained from the vSphere Web Client, the vsan.cluster_info
command lays out all data about the cluster and its members, disks, networking, and many more, in one convenient list.
As we are asking for information about the VSAN cluster, the command will be executed against the cluster level in RVC.
Type
vsan.cluster_info /<vCenter>/<Datacenter>/computers/<Cluster>
and strike the Enter key:> vsan.cluster_info /vcenter.corp.local/Datacenter/computers/VSAN\