Restart a ReadyNAS Ultra Plus after many years of downtime

[mlippert]

It is running RAIDiator 4.2.31

So I'm running w/ X-RAID2 6 drives and 1 failed.

It's happened before and I just swap in a new drive and it resyncs, all good.

This time the resync is extremely slow.

Recovery 0% complete, Time to finish 10129 hr 39 min, Speed 107 KB/sec

So could this be due to a bad replacement disk, and if so, can I just pull it and put a different one in in the middle of what looks like will be a 422 day rebuild?

And/or can I shutdown the ReadyNAS and pull it and pull it and reboot unprotected and then, replace with another drive?

[mlippert]

Well I didn't have to wait 400 days which is great. I've got another drive on order, I'll try it tomorrow.

RAID sync finished on volume C. The array is still in degraded mode, however. This can be caused by a disk sync failure or failed disks in a multi-parity disk array.

[StephenB]

BTW, the model in your title is incorrect. If your model tag is correct, you have an Ultra Plus 6 - which is very different from the NV+ v1.

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@mlippert wrote:

So I'm running w/ X-RAID2 6 drives and 1 failed

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It looks like two failed to me, otherwise the volume wouldn't have been degraded after the sync completed.

As you learned, the estimated sync completion time is often very wrong.

[mlippert]

Yes you are totally correct about the title "Re: Restart a ReadyNAS NV+ RND4000 after many years of downtime"! I didn't type that title, not sure how it got selected actually.

The title (approximately) that I typed was "What happens if I shutdown/reboot while the NAS is resyncing or rebuilding?"

I'm going to try to reset the title to that. I suspect one of the "not so helpful" suggestions got clicked on by accident while I was trying to find the exact model of my NAS.

[mlippert]

Hmm I can't reset the title. Yes my suspicion is that the new replacement drive is bad. which is why "after" the rebuild it is still unprotected and that new drive is listed as dead.

I think when I replace the replacement I'll follow up in a new topic, because this title is confusing.

[StephenB]

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@mlippert wrote:

I think when I replace the replacement I'll follow up in a new topic, because this title is confusing.

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I'll fix the title for you

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@mlippert wrote:

 which is why "after" the rebuild it is still unprotected and that new drive is listed as dead.

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Try download the log zip file, and see what is in the SMART log. 

If you want to try again, you could power down, remove the drive, power up, and then try reinserting it.

[DEADDEADBEEF]

RAID sync finished on volume C. The array is still in degraded mode, however. This can be caused by a disk sync failure or failed disks in a multi-parity disk array.

This message has a bit of tricky choice of words, what "finished" means in this message is really "stopped". It means that your sync failed, either because the new disk failed or another disk in the volume failed. Check disk smart status in the downloaded logs and/or reach out to netgear support to evaluate the current health status if you're not sure how to read the logs yourself.

[StephenB]

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@DEADDEADBEEF wrote:
It means that your sync failed,

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Not necessarily.  If two disks in his RAID-6 volume had failed, then even if the first resync is successful, the volume would still be marked as degraded until the second failed disk was also resynced.

However, it could mean that the resync failed. 

[mlippert]

@@StephenB thanks for fixing the title (it's close enough although my NAS hasn't had any downtime actually, it's be running great and constantly since I got it Nov 2012).

Ah that is the information I was looking for. That powering it down unprotected and then rebooting it was OK to do, and wouldn't cause me additional problems getting it rebuilt.

The only other thing I wanted to know was would it work or cause a problem to just yank the replacement drive WHILE the NAS is rebuilding. I know not to touch any of the other drives containing my "unprotected" data. (since the rebuild stopped after a few hours I don't really need to know the answer to this right this second.)

[StephenB]

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@mlippert wrote:

The only other thing I wanted to know was would it work or cause a problem to just yank the replacement drive WHILE the NAS is rebuilding. 

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That should work ok...  But I think it's best to avoid doing that.