I have started experiencing the same problem. I have run memtest for 24hr (10 passes) and it was fine. First time the SSD broke, replaced it with a new drive. Rebuilt the docker disk - was corrupt in 2 days. Not sure what to do? Memtest for more than 24 hr? Swap the CPU and motherboard? Rollback to an earlier unraid release? I am on 6.12.4