I had 1 drive in the array suddenly show up as "device is disabled". I pulled diagnostics, rebooted, ran a short Smart-Test, no issues show up. Dropped it out of the array, then added it back and started a sync.

Then I had a different drive in the array suddenly show up as "device is disabled". I canceled the sync, pulled diagnostics, and kicked off a long smart-test on both drives. I'm attaching both sets of diagnostics here.

This is a new build that I just completed. New PS, cables, case, etc. The first drive was in use in my prior build. The 2nd drive is a warranty replacement that just came from WD. Both were precleared (x3) since neither had data to worry about on them prior to going into the array.

I've looked at the logs but I don't think I know enough to be confident about what's going on.

First_bluesmaster-diagnostics-20251020-0944.zip Second_bluesmaster-diagnostics-20251020-1052.zip

It's not logged as a disk error; it looks more like a power/connection issue. Check/replace cables, especially any power splitters; it could also be a bad PSU.

As it turns out, both of the drives were on a single power splitter. Reworked the power cables a bit and running sync to rebuild everything. I'll update once complete.