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STATUS_VOLMGR_VOLUME_OFFLINE
The volume object is offline, regardless of whether a drive letter is visible
STATUS_VOLMGR_VOLUME_OFFLINE reports the state of the dynamic volume itself. It is not interchangeable with a missing disk and does not prove the file system is corrupt.
A volume can become unusable because required disks or plexes are missing, because the containing configuration is unhealthy, or because the volume has been deliberately taken offline. Microsoft’s VDS documentation also separates online/offline status from health and rebuilding state.
Inspect the containing pack, the volume’s plexes, and all member disks before trying to force it online. If the underlying storage is unavailable, changing mount points will not repair the topology; if storage is healthy, determine whether an administrative offline action or incomplete recovery left the volume in this state.
What to inspect
- Query volume status, health, and transition state together rather than using drive-letter presence as the state test.
- Check the pack and member disks for Offline, Missing, or Failed Redundancy conditions.
- Only attempt online or recovery operations after the cause of the offline state is understood.
References
- Microsoft VOLMGR entry for STATUS_VOLMGR_VOLUME_OFFLINE.
- Microsoft VDS health-state model distinct from object status.
- Microsoft Disk Management troubleshooting for offline dynamic storage.
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