A few weeks ago disk 18 in my array was disabled. I bought a new Seagate Ironwolf 8TB drive from Amazon, replaced the drive and let it rebuild. It rebuilt successfully but shortly after disk 18 became disabled again. I got a second replacement Seagate Ironwolf 8TB and had the same result -- rebuilt successfully but within a day disk 18 became disabled again. I tried re-adding the same drive (the second replacement) a second time and same result. This time though it was at least a few days before it became disabled again. That brings us today, I still have disk 18 disabled.
I have a Norco 4224 with 24 drives in the array. 22 data and 2 parity.
Diagnostics zip attached -- haven't rebooted since the latest incident of disk 18 being disabled.
I would be grateful for any assistance and am happy to provide any additional requested info.
bm-nas-unraid-diagnostics-20211014-2301.zip