Might be a SAS driver issue. Have you checked if the drives show up on a live distro, something more current, like let’s say Void or anything that has a 6.x kernel?

I’ve had issues like this with older Marvel SCSI controllers, some of them don’t have open source drivers for Linux, and the ones provided by the manufacturer (if there are any) are so old that you’d have to be runnig kernel 2.x in order for them to work. I just gave up in the end, disabled the SCSI controller in BIOS and just used the rigs on IDE/SATA.

The almost endless pool of workers is what drives 996. If one doesn’t want to work, there is always someone else to replace him/her. Remove that from the equation and 996 will be no more.