After cleaning up my NAS I was greeted by a warning after restarting my DS2413+. My pool was in a degraded state, but all drives were fine? Checking the total pool use also did not give me any hints, as I still had plenty of free space.
Turns out none of my drives were reporting any health status anymore (“Health status not available”). Trying to open the S.M.A.R.T. values would just show an error about a failure to communicate with the drive. Those messages popped up for every drive. Did I kill my NAS during cleaning?
Of course not. Manually updating the S.M.A.R.T. database via Diskstation fixed the issue. Somehow the database got corrupted, possibly during an automated update?
Anyway, after updating the database the status turned back to all green. For good measure, I did run a scrub on my pool.
