Buffalo Forums
Products => Storage => : sieve June 11, 2020, 03:34:21 PM
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A couple of days ago the NAS became inaccessible. I was able to log in to the web interface at that time. From what I recall from the logs, disk2 had failed first, but it seems subsequently disk3 and disk4 had also been dropped from the array. 3 simultaneous disk failures seemed unlikely to me, so I initiated a restart from the web interface. The NAS did not boot back up. I heard the click of death while it was trying to boot. I powered off the NAS and proceeded to check the drives in a PC with SystemRescueCD.
Disk2 had failed and would not reach a ready state to get to the boot selection menu of the PC. On the other 3 drives SMART seems good, and running mdadm --examine shows superblock is intact. However, the Events count is different for disk1 at 219873 while the count for disk3 and disk4 is 219847. Also, the Update Time of disk 1 is about 21 hours more recent than disk3 and disk4. Lastly, the Array State for disk1 is "A..." while disk3 and disk4 show "AAAA".
What should my next steps be? Can I just boot the NAS with disk2 removed? I am unsure if the NAS would automatically resync and become accessible in degraded mode since the event count is out of sync. If it gets to degraded mode, then insert a new disk into the NAS and rebuild?