On 2026-06-21, Paul Leiber wrote: > My knowledge in IT is limited. I just can describe what I can observe and make > guesses. (The md RAID is part of a setup I do for fun at home.) I know that it > sounds strange, but my best guess is that there are two differing databases > stored on my hard drives. How else can the repeated switch between different > data sets be explained?
I think you should investigate your database installation. The problem you described cannot come from raid1. It could be database installed on "partition" and not on "md array". Or a backup reverted. Or something else.

