Understanding Virtual SAN on-disk format versions (2145267)
This article outlines all Virtual SAN on-disk format versions, their purposes, and alternate version numbers where applicable.
Virtual SAN (VSAN) has several different on-disk format versions available depending on the version and upgrade history of the cluster. Some on-disk format versions are transient while some are intended for long-term production.
Important: There can be some deviation between the on-disk format version displayed in the vSphere Web Client and the version displayed during command-line troubleshooting or reporting.