My current issue is that Unraid is not detecting my Parity drive. It started with other issues, which I'll detail below. Diagnostics and Syslog attached, as well as, SMART for Disk 4.

1) I recently added a new 8TB drive to my array (Disk 4); pre-clear went fine, formatted, and added

2) During a write operation, Disk 4 started getting errors and the drive was disabled. (working on pulling syslog for these errors from a pi, will post as soon as I can pull them down)

• The errors were some that I've dealt with before typically due to power or SATA connections

• also noticed that Parity drive was getting the same errors

3) Drive 4 and Parity were connected through same power lead, so I changed some of the SATA power connections to balance the available PSU connections (400 W); I also changed the SATA cable just in case on Disk 4.

4) on boot, the Parity drive is not found; so I started troubleshooting this.

Troubleshooting Parity drive

• I've changed the SATA cable; no change

• I've changed the power (swapped with a drive that is showing up); no change

• I've changed the SATA slot on the MOBO; no change (still just Parity not found)

• Interestingly, I have a 4 SATA PCIe card, and moved the cable to that, Unraid would not even boot up (this is a question unto itself)

Parity Drive has never thrown aging errors that I can recall. I'd be surprised if it just bombed out. Other ideas?

That said, and my final question... I've just added Disk 4, so there is very little information on it, which is not critical. If the recommendation is new drive, is it just as easy to move Disk 4 to Parity, rebuild, and reduce the number of array slots back to what I had? I don't have a new drive handy, and would like to get back up an running.

oldmain-smart-20250715-1119.zip oldmain-syslog-20250715-1518.zip oldmain-diagnostics-20250715-1117.zip

Is parity detected by the board BIOS?

I'm not seeing it as an option in my boot sequence, and I don't think I'm seeing it listed as it flashes by during startup. If there's another way to verify in BIOS, I'm not seeing it... older mobo.

If it's not detected in the BIOS the drive may be dead, and it also won't be detected by Unraid, assuming you have already tried different cables.

I forgot about the 3.3V issue with WD... I have a standard SATA power connector on it. Guessing this may be the root of my problem.