After you finish upgrading the disk format, you must verify whether the Virtual SAN cluster is using the new on-disk format.
- Navigate to the Virtual SAN cluster in the vSphere Web Client.
- Click the Configure tab.
- Under Virtual SAN, click Disk Management.
The current disk format version appears in the Disk Format Version column. For example, if you are using disk format 2.0, it appears as version 2 in the Disk Format Version column. For on-disk format 3.0, the disk format version appears as version 3.