RN312 Volume: The resync operation finished on volume data. However, the volume is still degraded

[filipinasdelta]

I have this RN312 with 2x4TB WD Red Drives (WDC WD40EFRX-68WT0N0)  on RAID 1 at a client and Disk 2 went down so I replaced it with another identical brand new disk. Resync started then completed 4 hours later but status is still degraded and I don't understand why and how.

Thu Aug 3 2017 16:03:42

Disk: Disk Model:WDC WD40EFRX-68N32N0 Serial:WD-WCC7K2CU3E2A was added to Channel 2 of the head unit.

Thu Aug 3 2017 16:03:59

Volume: Resyncing started for Volume data.

Thu Aug 3 2017 19:48:08

Volume: The resync operation finished on volume data. However, the volume is still degraded.

Thu Aug 3 2017 19:48:14

Disk: Disk in channel 2 (Internal) changed state from RESYNC to ONLINE.

Fri Aug 4 2017 1:00:54

Volume: Volume data is Degraded.

Fri Aug 4 2017 19:43:51

System: The system is rebooting.

Fri Aug 4 2017 19:45:23

Volume: Volume data is Degraded.

Fri Aug 4 2017 19:45:24

Volume: Resyncing started for Volume data.

Fri Aug 4 2017 23:27:30

Volume: The resync operation finished on volume data. However, the volume is still degraded.

Fri Aug 4 2017 23:27:36

Disk: Disk in channel 2 (Internal) changed state from RESYNC to ONLINE.

 ...

If I restart the unit it resyncs again then back to Degraded state.

I've downloaded the logs and they're available via dropbox HERE

Please help me. 

Thank you,

Filipe

[StephenB · Accepted solution]

Per mdstat.log, the second disk ends up set as a spare. I'm not sure why that is - the fastest way to resolve it might be netgear support.  If the customer purchased between 1 June 2014 and 31 May 2016, then they are entitled to lifetime chat support.

FWIW, the first disk has a couple of errors (2 pending sectors)

[StephenB · Accepted solution]

Per mdstat.log, the second disk ends up set as a spare. I'm not sure why that is - the fastest way to resolve it might be netgear support.  If the customer purchased between 1 June 2014 and 31 May 2016, then they are entitled to lifetime chat support.

FWIW, the first disk has a couple of errors (2 pending sectors)

[filipinasdelta]

Thank you StephenB I'll try getting hold of them.

I'm I wrong to assume it's fine to leave Disk 1 as it is until an eventual fail?

Cheers,

Fil

[StephenB]

I wouldn't touch disk 1 right now.  If you don't have a full backup, I do recommend making one.