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STATUS_VHDSET_BACKING_STORAGE_NOT_FOUND
The VHD Set exists in a storage relationship, not as an isolated file
STATUS_VHDSET_BACKING_STORAGE_NOT_FOUND belongs to the VHD Set storage model. Microsoft documents .VHDS as the shared virtual disk format used for guest clusters and explains that the VHD Set file stores checkpoint information and metadata about the group virtual disk while Hyper-V manages checkpoint chains and merging.
A missing backing storage file therefore needs chain and inventory diagnosis. Verify the VHD Set through Hyper-V management, backup records and the storage paths that contain its related virtual-disk data. A file can be absent because of an incomplete restore, storage outage, manual move, cleanup, or a deployment that did not preserve the complete set of required backing files.
Do not create an empty file with the missing name or edit the .vhds metadata to make the error disappear. That can destroy the evidence needed to restore the chain and can make later Hyper-V repair more difficult. Preserve the directory and backup state, recover the actual backing storage, and let Hyper-V validate or manage the chain.
What to inspect
- The
.vhdsobject, its configured storage path, and the full set of related VHD Set or checkpoint files present on storage. - Recent backup, restore, migration, merge, storage failover, or manual file operations affecting the virtual disk.
- Hyper-V and storage events naming the expected backing path before any files are created or renamed.
References
- Microsoft: Create a VHD Set file
- Microsoft Open Specifications: Windows protocols index and MS-VHDX
- Microsoft Open Specifications: NTSTATUS values
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