I faced an issue with one of my PR4100s, that I had not experienced before.
After a necessary Hard reboot, due to the NAS spending a few days in ‘powering down mode’ with no hope of actually powering down. The Drive 3 LED went red and the Dashboard informed me that the drive was Bad.
I had a replacement HD Red 8TB at hand and substituted it with the faulty one.
Once the System started to rebuild the RAID 5, it stopped after ten minutes and this time showed Drive 1 and 2 as Bad with the corresponding red LED drive lights.
This of course freaked me out, as now I had in effect three Bad drives! So I replaced the original ‘Bad’ Drive 3 and rebooted. This time Drive 1 and 2 were OK and three was Bad, as expected. Am currently transferring all data to another NAS as quickly as I can, but the experience has got me stumped!
The latest PR4100 firmware is installed.
Any thoughts? Cheers.