The VMFS repair process is a necessary evil in disaster recovery. While technically capable of fixing metadata corruption, the high risk of data deletion makes it a tool of last resort.
Use with extreme caution. The fsck tool for VMFS (VMware Virtual Machine File System) is not a "fix-it-all" utility like standard Linux fsck . It is a low-level consistency check that can result in data loss if used incorrectly. It should only be used as a last resort when the VMFS datastore is corrupted and mounting fails, and you have no other recovery options (backups or snapshot restoration) available. fsck vmfs repair
After a sudden power failure or SAN disconnect. The VMFS repair process is a necessary evil