Ok, I will try and mount it in Unassigned Devices.
I'm a bit confused by "which could lead to data loss if you simply rebuild the disk" and "assume the physical disk is OK and rebuild parity instead".
Is there a difference between rebuild the disk and rebuild party?
I do not have disabled disk plugin yet.
Well my backup is probably a bit optimistic, I have about 1TB of photos in raw format in this array. If they were jpegs i would have compressed them on my Google drive, but that wont work with raw.
Edit.
Now come to think of it, could this corrupted data be mismatches in the parity caused by moving folders manually in MC from a cache drive I wanted to stop using about one week ago?