So, basically I just got 3 used 4TB Seagate SAS HDDs for dirt cheap and I got a Cisco UCSC-SAS12GHBA RAID card flashed into IT mode, and I got this mini SAS HD to SAS cable. (I'm using these in a desktop PC) When I go to start it up, the drives spin up like they should but when I go to initiate them with disk management, it says "could not initiate disk because of an I/O error." I also tried going though the windows 10 setup and when I try to create a partition, it doesn't work. To me this sounds like windows can't write anything to the drives, but I really don't know as I just got these and I've never worked with SAS. Also, if this helps, the guy who I bought them from was using them with Server 2019.
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