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STATUS_SPACES_NUMBER_OF_DATA_COPIES_INVALID
Copies and columns answer different questions
NumberOfDataCopies controls how many complete copies of user data the virtual disk maintains. It is a resiliency attribute, while NumberOfColumns controls the striping width. This status means the requested copy count is not supported by the layout or cannot be satisfied by the pool as configured.
What to inspect
- For Mirror, verify that the requested count is a supported mirror configuration and that enough healthy disks exist in the required fault domains.
- For parity configurations, do not assume that a copy-count value means the same thing as a mirror replica count; use the provider's documented layout parameters.
- Review usable capacity and tolerated-failure requirements together, because increasing copies changes both.
Microsoft: New-VirtualDisk NumberOfDataCopies
Microsoft: fault tolerance and efficiency
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