This morning I found my second parity drive was disabled, due to write errors. I believed it was a bad cable, swapped to an unused on the same breakout cable, unassigned it, started the array, stopped, reassigned, and left it to sync/rebuild. This evening I got back to 2 other drives with errors. I paused the rebuild and left the server on, with the array started. Dockers were not started on this reboot.
In the past, I've had two with read errors, but it was neither of these drives. One was resolved by replacing the drive, as I planned to upgrade it anyway, but the old drive has been used elsewhere without issue. The second was resolved by replacing the breakout cable. The cable may have not needed to be replaced, but I did. Neither were plugged directly into the motherboard.
Those past errors and multiple drives with errors at the same time makes me suspicious of the HBA card, but maybe I'm just this unlucky.
Any insight on my current issue and next steps would be appreciated.