How to access files on a RAID-disk outside from the NAS?

Hi,

I have a QNAP TS 231K. Recently the NAS stopped working, status-LED stayed red on a 2-disk RAID1. As long as atleast 1 HDD was in the bay the NAS didn’t gave me a webinterface. After removing both HDDs I got the “smart installation” screen.

I found no way to copy my files. In Ubuntu I couldn’t assemble the RAID, it sees the LVM2 but I can’t access anything. I end up with errors about the superblock if I remember right. In Windows I only can access the filesystem with UFS Explorer, though the test version can’t copy any larger files and the pro version is way beyond my budget.

Please tell me how I can rebuild my RAID without dataloss or how I can copy the files. I didn’t expect that I can’t access a RAID1 disk on Linux nowadays. :frowning:

Put both disks in during smart setup and then do a non destructive firmware reinstall.

You need to recreate your shares manually afterwards (see manual)

Develop a backup strategy…accidental or malicious file deletion is also a scenario where a RAID does nothing for you.

Thanks for your help!

If I add 1 or 2 HDDs the device shows a red status light and no web interface at all. That’s my problem here. I found no way to reinstall the software without losing the data.

I assume I can’t install a blank HDD of bigger size, install the QNAP OS, and then add the smaller drive with the files and say “use this to rebuild”?

It’s odd that it’s impossible to access the files on a RAID1 volume in today’s Linux distribution. What a bummer.

Backups yes, but thanks to the AI bubbles ridiculous hardwarepricing I couldn’t afford another 14TB HDD earlier. :unamused_face:

QNAP use their own customised mdraid/LVM tools, configs and kernel management routines which are incompatible with the standard mdraid/LVM tools publicly available. QNAP added extensions to the standard tools to give them some extra abilities.

Don’t rely on being able to read the NAS drives externally. Maintain external backups of your NAS data at-all-times.

As mentioned, this is not a task expected of a normal, or advanced, user.

You could contact QNAP support or your next best alternative is a data recovery specialist if the data if important to you (but obviously if it is, then you should have a backup strategy that matches the level of importance).

The more you “play” with it, the less likely you will be to recover any remaining data, although it sounds like you had 2 drives fail already.

Actually this was atleast partly the backup for a SSD-softraid. The soft raid didn’t fail, it was the QNAP-OS that refused to boot. This is clearly a fail on the QNAP site. But blaming the user is the cheap way of saying the company doesn’t care?

The web setup loads without disks you said…unclear what’s unclear..push the disks into the NAS when you see the websetup (not before)

I don’t speak for the “company”, I’m just a user. Just trying to help you as over the years there have been hundreds of people trying to recover data from the disks and they only made things worse by trying random commands. It was a warning, and just trying to help.

Not sure how “SSD-softraid” fits into the picture.

Talk to an expert if you need help.

Good luck.

Regarding the issue you encountered, we recommend that you open a support ticket. Our Support Team will be happy to assist you further with your case.

Thank you!

Support Portal: https://service.qnap.com/