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STATUS_VOLMGR_PLEX_NOT_RAID5
The operation requires a parity plex, but the selected plex has another type
STATUS_VOLMGR_PLEX_NOT_RAID5 is a type precondition failure. The requested command only applies to a RAID-5 or striped-with-parity plex, and the selected plex does not have that topology.
Parity regeneration and column repair have semantics that do not apply to a simple, spanned, striped, or mirrored plex. Microsoft distinguishes striped-with-parity as a fault-tolerant volume type, so treating every multi-disk plex as RAID-5 can send the wrong recovery operation.
Query the actual plex and volume type before dispatching the command. If software chose the operation from a cached display label, use current provider properties instead; a volume may have been recreated or imported with a different layout.
What to inspect
- Record the plex type returned by current enumeration and the operation that requires RAID-5 semantics.
- Check whether the caller confused a striped volume with a striped-with-parity volume.
- Do not substitute parity repair for mirror resynchronization or simple-volume recovery.
References
- Microsoft VOLMGR definition of STATUS_VOLMGR_PLEX_NOT_RAID5.
- Microsoft VDS volume types including striped and striped-with-parity layouts.
- MS-VDS recovery differences for mirrors and RAID-5 volumes.
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