Determining the case of recovery based on the list of pools and spaces
Detected spaces can be in one of the following states:
- Good if all of the physical drives in this space are present and recognized.
You can immediately copy the Good spaces or recover files from them.
This is a Case I recovery.
- Readable using redundancy, if some physical drives are missing but you still can copy the space content thanks to redundancy.
Readable spaces, just like Good spaces, can be immediately saved or transmitted to
ReclaiMe File Recovery for file-by-file recovery. With Readable parity spaces, expect that the overall performance
will be worse as compared to Good parity spaces.
This is because parity calculation is required to compensate for the lack of the drives.
Note that simple spaces cannot be in Readable state since they are not redundant. This is still a Case I recovery.
- Missing drives, if more drives are missing than can be reconstructed based on redundancy.
You should try the Find Drives procedure to find the missing drives. This is a Case II recovery.
In addition, if Storage Spaces metadata is severely damaged, the entire pools or spaces may be missing.
In this case, the slab maps have to be reconstructed, making it a Case III recovery.