I am having corruption? errors on my cache drive that I cannot track down the cause of. I have tried a simple reboot, a check with the array in maintainence mode and running memtest to see if RAM is going bad to no avail.

I'm not seeing anything in the SMART data for the drive to indicate it's failing either.

I've attached diagnostics for the people smarter than me lol.

Any help is appreciated.

tower-diagnostics-20260609-1455.zip

Scrub the pool and post the results from the GUI

Here is the completed scrub. No errors found.

Scrub started:    Wed Jun 10 08:24:22 2026
Status:           finished
Duration:         0:16:02
Total to scrub:   302.26GiB
Rate:             321.68MiB/s
Error summary:    no errors found

Since no errors were found, reset the stats for the pool ,and keep monitoring; they could be old errors, but if new ones come up, there's still a problem

I cleared the stats and the errors came back within a few hours.

tower-diagnostics-20260611-0543.zip

Start by running memtest.

Alright, I let memtest run for a good 3 hours, 2 passes completed, no errors found. I had to burn a new unraid usb sitck to get memtest to boot though, my normal boot usb stick was giving the error booting kernel failed bad file number, the unraid os boots fine just wouldn't boot memtest. Could that signify a failing/corrupted usb stick?

Appriecate your help so far.

6 hours ago, Ethan McDonnell said:

Could that signify a failing/corrupted usb stick?

Maybe, but that should be unrelated to the pool errors.