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Forum Discussion
Replacing failed disk in RN426
One day I rebooted my RN426, and one of my disks (disk4, Seagate 3TB) was not longer recognized, so the volume was marked as degraded. Rebooted again, and it came up, volume resynced, everything OK. ...
Hardware failure is a possibility, but there are other possibilities.
Please send in your logs (see the Sending Logs link in my sig).
Please also go to System > Settings > Support, enable Secure Diagnostic Mode and PM (Private Message) me the 5-digit number you then get or include it on your email.
Do you see SMART errors for the old disk 4 in smart_history.log?
Your 3TB disks remaining in the NAS have been powered on for about 3.25 years. The ST3000DM001 has notoriously high failure rates when used in RAID arrays.
Your 8TB WD RED is a much better choice.
A few ATA errors in and of itself may not suggest that a disk is failing just yet, but if the count continues to increase rapidly or increases a lot that would suggest a problem.
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