May 21, 20233 yr Hi all it's my first month on unraid and has been going really well until now. I have a set of 4 new 8TB ironwolf NAS HDDs attached through a USB3 DAS and there seems to be an issue with one. Disk 1 started showing up with errors (approx 11,000) in the unraid 'main' page. I had a warning notification and a day later had ~44,000 errors on same disk. I rebooted the server and disk 1 now shows up as unmounted and wants me to format the drive. I tried to run 'xfs_repair -nv /dev/sdb1' but I'm getting no filesystem. Wondering what my next steps should be? I have a couple of 12TB hdds that I was planning on using for a backup system, and didn't really want to use them for this. My understanding is that I wouldn't be able to recover the data using the 12TB because my current parity is only 8TB. If I get a new 8TB hdd can i rebuild to this? Is it worth formatting the same disk and try to rebuild to that? Not sure is the drive is dead or might be recoverable. Diagnostic file attached. Any help would be much appreciated! unraid-server-diagnostics-20230521-1012.zip
May 21, 20233 yr Community Expert Solution 7 hours ago, ponchothecowboy said: HDDs attached through a USB3 This is usually a bad idea. Constant errors from disk1, power down, re-seat that disk and post new diags after array start.
May 21, 20233 yr Author Thanks for getting back to me so quickly! I did pull the drive and put it back in the same slot in the DAS - that was when unraid was saying to reformat it and not detecting the filesystem. On your advice I pulled it from the current slot on the DAS and moved it to an empty slot (thinking there may be an issue with the connection) and it's all back up and running! Array started automatically and all seems to be ok. Should I run a filesystem check 'xfs_repair -nv /dev/sdb1' and do a smart drive check too? FYI before the drive went down I did do a smart check and it reported everything was ok. I'd like to check that everything is ok - what should I do? New diagnostics attached. Really appreciate your help and advice! unraid-server-diagnostics-20230521-2109.zip
May 21, 20233 yr Community Expert Filesystem looks OK but you can check it, but use the GUI or use the md device, see check filesystem, if you do it directly on the sd device it will invalidate parity.
May 21, 20233 yr Author Thanks so much for your help Sounds like a warranty replacement/refund on the DAS. Cheers
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