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VDS_E_MIRROR_NOT_SUPPORTED
Mirror capability is a service/platform feature, not something that can be inferred from two healthy disks. VDS exposes VDS_SVF_SUPPORT_MIRROR as a service capability flag, and its volume-creation contract notes that fault-tolerant binding operations are not supported on all platforms. This HRESULT means the requested mirrored-volume operation is outside the supported configuration.
Why this state matters
Query the VDS service flags and record the operating-system edition and provider type. Do not troubleshoot disk size, stripe geometry, or free extents until mirror capability is established. Also keep legacy VDS dynamic-disk mirroring separate from Storage Spaces or hardware RAID: those technologies have different management objects and do not make a VDS mirror operation valid.
Diagnostic focus
- Query VDS service capability flags for mirror support.
- Record operating-system edition and the software provider handling the pack.
- Confirm the application is actually using VDS dynamic volumes rather than Storage Spaces or hardware RAID.
- Stop retrying mirror creation when the platform does not advertise the capability.
Technical references
MS-VDS error codes · VDS_SERVICE_FLAG · IVdsPack::CreateVolume · Basic and Dynamic Disks · VDS Volume Object
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