My TS-669Pro Raid 5 with 2 hot spares is not rebuilding. Drive 5 never completely failed, just came up with warnings, same with one of the hot spares. I replaced the one bad hot spare and no change. Now it is stuck in degraded mode. I have tried pulling the bad live disk to get it to fail over to the good hot spare but it then the volume goes inactive, even after I put the disk back in.
I’ve tried rebooting it and it will immediately say rebuilding skipped, then try to do a rebuild. That will go on for a few hours then say rebuild failed. It prompts me to do a bad block check which I do and of course finds bad blocks.
Of course as I’m writing this, now it will not load the volume at all.
Any recommendations? (no it is not backed up, don’t have anything large enough to hold it. This was supposed to be the backup…)
Create a support ticket with QNAP support.
If this is the PRIMARY data source, it cannot by definition be a backup.
Sounds to me like another drive has an issue too (otherwise the rebuild would have started), a RAID6 and backups would have saved your bacon. Tearful lesson to learn.
(yeah, not a mission critical backup,mainly off-machine storage and secondary copies. Still a lot of stuff that will be missed, along with a lot of clutter that needed to be cleaned out)
I’m in the process of running scans on all of the other disks even though they are all reporting good. I guess because an active disk and one of the hot spares both reported anomalies, that was enough to make the whole array fail?
No, only if another active member of the RAID ALSO fails, would the array go bust.
Keep in mind that the way QTS works, spare disks are always kept spinning and age the same way as member disks, so hotspares spares are a pretty bad idea (on QTS). Coldspares to swap if an issue comes up, are better.
If you access the NAS via SSH and issue a md_checker, what is the output ?
It’s running a disk check on one of the drives right now, will check and report back when it’s done.
Have a ticket in with QNAP too.
Thanks for reaching out! Our support team will follow up with you via a support ticket. Thanks!
About 2 years ago, I had a similar problem. I had a raid 6 configuration, which was suddenly degraded. No disk failures, no disk problems. One morning after a restart (it was shutdown properly) it showed the error, disc checks didn’t help. QNAP Germany was not able to solve the problem, but I had an additional backup on another system. Luckily I could access the snapshots on the system and I saved the data from the snapshots to an external drive, rebuilding my system and restoring the data from backup and the saved snapshots. The root cause of the problem was never determined, so I cross my fingers, that this will not happen again.