I have a Buffalo LS-WXL Linkstation Duo with two 3TB drives in a RAID 1 configuration.
From the Storage screen, Disk 1 in Array 1 is showing "Error".
If I select the disk all of the options are greyed out (check disk, format disk, remove disk, rediscover disk).
If I select "RAID Array" and click on "Rebuild RAID Array" it will work for several hours attempting to rebuild the array and then at some time or other the rebuild will fail and the NAS shuts down and needs to be power cycled, at which point disk 1 is showing "Error" again.
I have removed the drive and connected it to my desktop. It spins up and I have removed the partitions and then inserted it back into the NAS and tried to rebuild the array again, with the same result.
So, could the issue be a failing disk OR a problem with the NAS unit itself?