ReadyNAS 626 Status Is "Degraded" After Successful Resync

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nsne wrote:

 

The sde is the fifth HDD in the array, correct?

 

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Yes.  Though you can (and should) confirm this by looking at disk_info.log.  That will give you the serial number of the disk - which you can use to make sure you test the right one.

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nsne wrote:

 

I'd rather let the disk test complete before I go noodling around and potentially cause more issues. 

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Yes, that makes sense.  If you have a backup plan in place, it would be good to make sure your backup is up to date.

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nsne wrote:

Once that completes (and I'm assuming it could take days), I'll pull the HDD, mount it in a spare PC and run SeaTools. Or is there another diagnostic check you'd recommend?

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Seatools would be good.

I'd power down the NAS, pull the disk and double-check the serial number.  You can power up the NAS at that point (the volume should be ok, but of course still degraded).

Personally I'd run both the long generic test, and the "erase disk" advanced test.  The erase disk test will remove all partitions from the disk.  If you don't run that, then use the Windows Disk Manager to delete all the partitions on the disk. 

Then put the disk back - hot-insert is fine.  The NAS will sync everything again.  When it finishes, the volume will expand - it should end up at 68 TB (61.8 TiB)