SAS HDD not working in TrueNAS Build, even with compatible backplane

[leumas]

Good afternoon everyone,

I have a TrueNAS server in my homelab that has been running for quite some time, and it's due for an upgrade. I currently have a mix of 4 different SATA HDD in RAIDz2 configuration in a Supermicro 2U X8DT3.
I checked before purchasing the new drives that the backplane is compatible with SAS and SATA drives on every port.
I now have a bunch of Seagate Constellation ES 2TB drives, models ST2000NM0001 and ST3200044SS. I put some into my server, and instantly things got weird. Of the 12 drive bay, only slots 6-8 will recognize the drives, no matter the drive or model. In TrueNAS, the drives that are recognized fail a long smart test with "Error:48816477". I've been to the smart test wiki and can't find any error codes that match. Also, they all have errors when trying to wipe them "Error: [Errno 22] Invalid argument".
I found this command online but it did not come with any instructions and I am hesitant to use it without understanding it completely "sysctl kern.geom.debugflags=16".
My end goal with this is to replace my current pool with 4 old drives with a new pool with 10 new drives.

I would greatly appreciate any help or suggestions you all have! As a new computer science student, I haven't learned everything yet, and would really like to learn more about this system I am using and why it is not working as expected.

- Sam

Specs Quick Guide:
Server - Supermicro 2U X8DT3 2x X5650 2.66ghz 12-Cores / 24gb Ram / 12x Trays / 2x720w
Current Working Drives - WD re SATA 2TB, WD re SATA 2TB, Seagate Barracuda 2TB(x2)
New drives - Seagate Constellation ES model ST2000NM0001 and ST3200044SS
OS - TrueNAS core Version TrueNAS-12.0.U8.1

 

[Arwen]

Their is a newish feature that possibly is biting you, the 3.3v SATA/SAS power pin change to reset. I don't pretend to understand all the details, but the power connector changed standards. They re-used one old 3.3v power pin to be a drive disable. The intent is to allow a disk chassis to power cycle a drive remotely, without pulling drive.

Here are some details of the "Enter/exit Power Disable (PWDIS) mode";

Wikipedia - Serial ATA - Power connectors

I don't know why slots 6-8 are working, other than perhaps they have been modified to not supply the 3.3v power.