I have an Intel nuc12 with my cache drive Nvme internally, and a usb3.2 drive bay connected with two HDDs (16tb each).

This last month has been very frustrating. It started with docker freaking out, totally stopped working and my cache drive was throwing off IO errors.

Did some exploration - no smart health issues, literally just seemed like a weird transient issue. Shutdown everything, started back up, now there was no Nvme issue but my parity drive had an issue and wasn't working. Again, no smart issues. Just wasn't connecting, might have had a red X. Restarted again, then the OTHER drive (disk 1, HDD) was having problems. One more restart, suddenly everything was reading fine. Never figured out what happened.

Then fast forward a few weeks, out of nowhere I get a notification that my Disk 1 HDD had a read error and had a red X. No smart health issues though. Checked the whole system, logs, nothing showed up that's concerning. But because the array had been on for a minute, the Disk 1 HDD had a red X and I couldn't get everything up and running again. Docs said I had to build it, which has taken like 18 hours and in the meantime my whole docker setup has been down (so, my home assistant, NVR, etc).

I didn't have syslog server enabled until now so unfortunately I don't have old logs.

I ran memtest86 for a few passes, no issues. I had already run it for five passes when I first got this system in late 2023.

I have NO IDEA what to do! I can't keep hitting transient errors and rebuilding the array, that's insane - obviously someone please let me know if I didn't have to do a rebuild.

I know USB bays aren't recommended for assigned disks, however it's a miniPC so there's no easy way around that AFAIK. Also, my cache drive which is internal was the initial issue, so I can't help but think it's some hardware issue with the nuc12 itself.

Any advice? Everything is so much more expensive vs a few years back so I'm stressed lol.

USB is the reason for your problems.

Attach Diagnostics ZIP to your NEXT post in this thread.