I am certainly not an expert in this area, but it seems to be related to a RAID system. Are you drives set up in a RAID? Are you running your system with the SATA controller set to RAID in the bios?
But it sounds like it might be a drive configuration situation, so describing how your system is configured might be helpful.
There might even be something related to the PCIe bus and the SATA ports, but that would be dependent on your system.