Other Hard Drive Troubleshooting

I just had a new replacement disk drive in the ZFS tank faulted

But its major breakage indicators (SMART Attribute IDs 5, 197, and 198) are all zero, after SMART Long Tests have been run. I'm thinking cable or controller port...

It's a Seagate, and the SMART attributes need to be read in hexadecimal.

The TrueNAS Hard Drive Troubleshooting Guide is so good that it's worth bookmarking.

Edit: Beware Section 4(d) which says "Swap the DATA cables between the suspect drive and a nearby drive". This may cause a second, potentially fatal failure on the "nearby drive", if the cable is at fault.
 
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