Thank you for the explanation - I did look through many posts and never got as easy of an explanation like you provided.
However, when I set the SataPortMap to 11H and DiskIdxMap to 181900, my disk shelf is still showing the first drives starting at 13...
Being there are 6 ports on my motherboard and 6 dummy ports, I thought maybe changing the SataPortMap to 66H and DiskIdxMap to 181E00 would work, but same outcome.
Any idea what I'm doing wrong here? I am using the DS3622xs build 42661.