Hi
One example how thing can go wrong very quickly
I have a EX4100 with 4 x 1TB WD RED in Raid 5, latest firmware
I’ve decided to upgrade to 4 x 4TB WD RED still in Raid 5
I removed drive number 4, and replaced with a 4TB one
I went to the browser to access the NAS webpage, and started the RAID rebuild
Drive tested OK, and started the rebuild, and at some percentage… trouble begins…
Rebuild process stops because drive nº2 fails…
I rebooted the NAS, and drive nº 2 still show as “BAD”
And now get’s worse…
Turned off the NAS, removed all drives to clean dust and to copy the serials
Plug the drives again at the same position, and at the nº4 bay I put the “old” 1TB drive, and turn on the NAS
And now all 4 drives appear as “GOOD”, but I have no RAID configuration at all at web the NAS web interface
Can something be done to recover this ?