Keep a record of your LUN IDs and NAA IDs to quickly identify missing volumes during a disaster.
Incorrectly re-signing a snapshot or cloned LUN can make the original datastore appear empty or missing. Step-by-Step Recovery Methods 1. Checking LUN Connectivity
esxcfg-volume -l esxcfg-volume -r <volume-uuid> # Resignature
These tools are the gold standard for "Mount & Extract." They read the raw data on the disk, bypassing the corrupted file system tables, and allow you to extract the .vmdk and .vmx files to a safe location.