Hello,
I am unable to create a Raid 5 on this dell optiplex 3020 I put 3 20tb ironwood pro drives in. I can create a mirror with the drives just fine no issues but that only uses two drives obviously. I've attached an picture to better understand the problem and show the complete error. The first picture is the regular boot and the second is the debug boot.
I thought it might be the on board sata controller but I get the same error with a sata pcie card.
Ive checked the bios and all three drives are detected in hexos