Forum Discussion

Aspirant

Jan 20, 2019

Readynas Duo 4.1.12 all configuration lost after power outage

I have 2 1TB drives with 750GB partition sizes running in mirrored fashion. After a power outage today, I noticed my credentials did not work for admin nor could I see any data on the network shares....

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StephenB

Guru - Experienced User

Jan 21, 2019

Marc_V wrote:

You can also try using Third party recovery softwares like ReCLAIMe which most of the members here have used.

R-Studio is a less expensive option that you could also try (since your NAS doesn't use BTRFS).

But maybe first try powering up the NAS with only disk 2 installed (in slot 2). Use the boot menu option to skip the file system check.

Jbrooksga

Aspirant

Jan 21, 2019

I have mounted both drives using utilities on both PC and Mac, but apparently both were initialized (or in the process of that)

My only saving grace appears to be that 6 months ago I replaced one of the drives due to increasing reports of smart errors. Most of the data I wanted to retain was unchanged since that time. I'm currently using extFS on a Mac to read and copy the data from that retired drive. There might be a few errors to deal with, but much better than losing everything.

Sandshark
Sensei
Jan 21, 2019
Pulling the drive was the absolutely worst thing you could have done. Yes, something went wrong when the power went out. And the NAS was in the process of repairing that when you interrupted it. It's possible it wouldn't have succeeded, but you should have let it try.

Because re-sync requires a lot of drive activity, there is a chance your previously removed drive wouldn't survive it. So it's good that you're backing up all data instead of just putting the old drive back in and trying to re-sync another drive.
- StephenB
  Guru - Experienced User
  Jan 22, 2019
  As you learned with this, RAID isn't enough to keep your data safe. It keeps your data accessible during routine disk replacements, but the only way to keep the data safe is to back it up to at least one other device. Personally I have at least two backups of anything I care about.