Hey there, 3 weeks ago I lost two drives, or at least I think I did.  I replaced them, built back and everything has been running fine.  Last weekend It happened again to a 3rd disk and before I replace the drive I was hoping someone could help me understand if there's anything definitive in the diagnostics that shows the disk being bad.  I was able to clear it and rewrite over itself but it was only up for a few hours before Unraid disabled it again.

 

Any help would be greatly appreciated.  Please let me know if anymore info is needed.

tower-diagnostics-20240129-1615.zip

Disk4 has disconnected. Connection problems are much more common than bad disks. Possibly nothing was wrong with those other disks you replaced either.

 

See if you can get it reconnected and post new diagnostics.

 

Also, no reason at all to clear a disk unless you want to just give it a good workout.

Hmm, I'm using a SuperMicro SC846 with 24 bay hot swap, I really hope I'm not losing the backplane as all three disks were in different slots.  I will try it in another slot and report back.

Emulated disk4 is mounted and has plenty of data, so that's good.

 

Some other things I noticed.

 

All of your disks except disk11 are very full. You might consider moving some files off the other disks and onto disk11. You always need to leave some free space in case you ever need to repair the filesystem.

 

Your appdata share is all over the array. Ideally, appdata, domains, and system shares will have all files on cache or other fast pool, with nothing on the array, so Dockers/VMs will perform better, and so array disks can spin down since these files are always open.

2 minutes ago, Starsixer said:

Hmm, I'm using a SuperMicro SC846 with 24 bay hot swap, I really hope I'm not losing the backplane as all three disks were in different slots.  I will try it in another slot and report back.

Power is another possibilty.

17 minutes ago, trurl said:

Power is another possibilty.

As far as I can tell it's the redundant power supplies that came with the case.  Is it possible they would provide an under powered supply?  Or that could be cables as well?

Any power splitters?

None.  The backplane is directly connected to the power supply.  The only power cable I added was an adapter to power the GPU.  Still haven't had a chance to try the suggestions here but hopefully I can get to it today.  Thanks for all the help so far.

Has the issue been limited to the Ironwolf drives? If yes see below:

 

 

 

On 1/29/2024 at 5:22 PM, trurl said:

All of your disks except disk11 are very full. You might consider moving some files off the other disks and onto disk11. You always need to leave some free space in case you ever need to repair the filesystem.

Still finding the time to check on all this but curious if there is a recommended percentage to leave available on the disks?  I haven't touched any settings but I assume they're so full because I usually don't add a drive until I'm nearly out of space.