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STATUS_SPACES_DRIVE_SPLIT
Split state indicates divergence, not automatically a dead disk
A split member has stale Storage Spaces state relative to the pool. This can follow a communication interruption, a topology change, or an interrupted operation. The important distinction is that the provider must reconcile membership and layout state; treating the disk as immediately reusable or manually forcing it online can increase inconsistency.
Safe investigation path
- Compare the member's operational state with the pool and virtual-disk state, and preserve the original connection and failover history.
- Check whether the disk is now reliably discoverable through the same enclosure and controller path.
- Use Reset-PhysicalDisk only under a documented recovery plan: Microsoft notes that it can try to reintegrate a discoverable split or lost-communication disk, while normal reset behavior is destructive.
Microsoft: Storage Spaces health states
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