ReadyNAS Pro Pioneer resync stuck at 58.6%

Did you get any notifications on drive failures? Might as well run disk diagnostic tools like seatools or WD Lifeguard.

Along the same line - go into "health" in frontview and look at the SMART stats for each disk.

I did not get any drive failure notifications, but I forgot to check SMART stats. I'll do that this evening when I get home and report back.

Well, I can't provide the SMART stats because when I press on the Health link in frontview the server never responds and the browser times out. I've tried both Chrome and IE on both Windows 8.1 and Windows 7.

Never ran drive diagnostics on the server. I have WD drives so I presume it would be WD Lifeguard. I can't run that except on a natively-connected drive, right? Does this mean I pull each drive off the server and test with Lifeguard? What risk/interactions should I be aware of? I have six drives formatted as X-RAID2.

Thanks,
-greg

What firmware are you running? You can also see the health if you download the logs.

You might also try IE in "compatibility mode".

Lifeguard tests are non destructive (some advanced tests are destructive but they warn you before they proceed). You'll want the NAS shutdown when you remove drives. Windows won't mount the drives, but lifeguard will see them.

see if you can also download the logs for the NAS, you'll get some information there if the frontview does not respond properly.

Sorry. Meant to mention that. I"m running RAIDiator 4.2.26. I tried to download the logs but unfortunately that timed out as well, as did shutting trying to shut the server down. So, in preparation for the drive testing I force shut down the server using the power button.

My wife then asked me to do a backup of some photos before pulling and testing drives so I powered it back up and shortly thereafter the server sent me two emails. The first told me that a firmware update to 4.2.27 had successfully completed (which I had initiated at the beginning of this week to see if a firmware update would reset the state enough to get past the resync sticking) and the second informed me that it had identified and fixed a drive error.

Suddenly the server was back up and running again at full performance. Frontpage which had been slow to display now pops up instantly again and I can now pull drive health and logs, which also come up instantly. Drive 5 is reporting three ATA errors and UDMA CRC errors so I suspect it needs replacing. I'll go pick up a spare today.

Still somewhat mysterious that it came back online, but at least I now know we have a drive issue that I can correct.

Thanks!