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VDS_E_VOLUME_NOT_HEALTHY
VDS_E_VOLUME_NOT_HEALTHY identifies a volume whose VDS health state is failing or failed. That is different from an offline volume: VDS exposes status and health as separate members of VDS_VOLUME_PROP, and a volume can require health diagnosis even when it is still visible to the operating system.
Use volume type to interpret the health failure
Microsoft documents different failed-status conditions for simple, spanned, striped, mirrored, and RAID-5 volumes. A missing disk immediately fails simple, spanned, and striped layouts; mirror and parity layouts have different tolerance rules. The volume type and plex membership are therefore essential to deciding whether repair, replacement, or recovery is appropriate.
What to verify
- Capture the VDS status, health, transition state, and type before starting any recovery operation.
- Enumerate plexes and disks and identify missing members, detached plexes, or write failures associated with the health transition.
- Protect recoverable data before destructive layout changes; a “failed” VDS health state is not a reason to reformat first.
References
- Microsoft: VDS_E_VOLUME_NOT_HEALTHY
- Microsoft: VDS_VOLUME_STATUS failure rules
- Microsoft: VDS_VOLUME_PROP health and status
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