Hello,

I have a brand new Seagate IronWolf Pro, 20 TB hard drive which is failing to appear in Unraid. I am using this drive to replace one which was throwing many SMART errors. I have never had an issue with a drive being detected before.

I have this HBA controller: OEM LSI 9201-16i https://www.ebay.com/itm/394355635243
Motherboard: Gigabyte Z270P-D3-CF (Intel Z270, LGA1151)

I have also attached my diagnostics. I think this may be an issue on my end. I had gotten one of these drives in a week ago but it made odd noises and did not appear so I thought it was faulty. This 2nd drive is also not appearing in Unraid.

Thank you!

tower-diagnostics-20260413-1057.zip

Verify the LSI is in IT mode. Also check power and data cable going to the hdd. Have you otherwise tested the hdd?

You can connect the disk to the onboard SATA controller and check to see if it shows in the BIOS.

Thank you both, I am going to need to get a USB keyboard to try booting my server into the BIOS. Weirdly if I plug in the HDMI to the PC right now I do not see anything on the monitor, but the server is working as it appears on my local network.

4 hours ago, gustyScanner said:

had gotten one of these drives in a week ago but it made odd noises and did not appear so I thought it was faulty. This 2nd drive is also not appearing in Unraid.

Odd noises can also be caused by bad power to the drive.

I was finally able to source a USB keyboard and was able to boot into the bios with the new harddrive plugged directly into the motherboard.

The HDD does not appear in the bios when connected directly to the motherboard. I do see the drives provided by my HBA card as well, but not the new Seagate hard drive. I can use this same cable and power cord and it works on all my existing drives, including the drive I was trying to replace with the SMART errors.

The motherboard is on the older side (I believe at least 8 years old), could it be due to an incompatibility? I do not think it could be related to the size of the hard drive because I have other drives the same size which work great.

Sounds like a defective drive.

2 in a row is unlucky. I wish there was actual supply to buy. I had to buy through a 3rd party Amazon seller and it was pretty much the only option. Thanks yall

By chance do you have modular power supply that you added a power cable too? Modular power supply cables look the same but are pinned different and can destroy drives also. You have to make sure the cables came with the power supply you are using.

Also google unraid.net 3.3V and hard drives

There is an AI summary that details this issue for some hard drive models.