Atomic Test And Set Of Disk Block Returned False For Equality -

The host may mark the storage as "All Paths Down" (APD) or "Permanent Device Loss" (PDL) to protect data integrity.

Use command-line tools (like esxcli storage core device vaai status get ) to ensure the array is actually reporting ATS as "supported." Conclusion The host may mark the storage as "All

If it matches (equality), the host updates the block with its own signature to claim ownership. The host may mark the storage as "All