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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?
Logs sent.
The smart status looks a bit odd.
time model serial realloc_sect realloc_evnt spin_retry_cnt ioedc cmd_timeouts pending_sect uncorrectable_err ata_errors ------------------- -------------------- -------------------- ------------ ------------ -------------- ---------- ------------ ------------ ----------------- ---------- 2015-02-21 19:03:53 WDC WD20EARX-32PASB0 WD-XXXXXXXXXXXX -1 -1 -1 -1 -1 -1 -1 0 2015-02-21 19:03:53 ST3000DM001-1ER166 XXXXXRK -1 -1 -1 -1 -1 -1 -1 0 2015-02-21 19:03:53 ST3000DM001-1ER166 XXXXXPV -1 -1 -1 -1 -1 -1 -1 0 2015-02-21 19:03:53 ST3000DM001-1ER166 XXXXXXV -1 -1 -1 -1 -1 -1 -1 0 2015-02-21 19:05:41 WDC WD20EARX-32PASB0 WD-XXXXXXXXXXXX 0 0 0 -1 -1 0 0 0 2015-02-21 19:05:41 ST3000DM001-1ER166 XXXXXXRK 0 0 0 0 0 0 0 0 2015-02-21 19:05:41 ST3000DM001-1ER166 XXXXXXPV 0 0 0 0 0 0 0 0 2015-02-21 19:05:41 ST3000DM001-1ER166 XXXXXXXV 0 0 0 0 0 0 0 0 2017-02-22 19:34:04 WDC WD80EFZX-68UW8N0 XXXXXX4Y 0 0 0 -1 -1 0 0 0 2017-09-10 03:38:24 ST3000DM001-1ER166 XXXXXXPV 0 0 0 0 0 8 8 0 2017-10-04 18:03:51 ST3000DM001-1ER166 XXXXXXPV 0 0 0 0 0 0 0 2
However, the disk that failed is W500F7XV, and that's not the one that has errors reported for it. Disk *PV is still in there, and I've definitely scrubbed multiple times since 2017-10-04 without uncovering any data corruption. Potentially any errors it has are in sectors that didn't hold any data, or did the NAS manage to recover them silently from the other 3 drives at the time?
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