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ERROR_SPACES_NUMBER_OF_GROUPS_INVALID
Groups are an advanced layout dimension, not a generic disk count
ERROR_SPACES_NUMBER_OF_GROUPS_INVALID means the provider cannot use the supplied number of layout groups. Grouping appears in specialized parity, nested-resiliency, or tier geometries where columns and parity fragments are organized into repeated sets.
This parameter is highly topology-dependent. A numerically positive value can still be invalid because the pool lacks enough columns, fault domains, or capacity to form every group consistently.
Use provider-defined geometry instead of guessing
- Determine which resiliency setting actually exposes a number-of-groups constraint.
- Check the requested groups together with columns, copies, and physical-disk redundancy.
- Verify that each group can be placed across the required fault domains.
- Review tier definitions for a conflicting group count.
- Remove the override and inspect the geometry selected by Storage Spaces.
- Do not interpret groups as storage pools, cluster nodes, or file-system allocation groups.
References
- Microsoft: nested resiliency examples
- Microsoft: MSFT_ResiliencySetting
- Microsoft: CreateVirtualDisk geometry parameters
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