I don't know about the MkII, but I know on the MkIII boards you have to have active termination at BOTH ends of the SCSI chain, as the board itself has none.
This means if your HD has a built in active termination option on it, your SCSI chain should look like:
HD --- CS SCSI --- Terminator
Otherwise:
Terminator --- HD -- CS SCSI -- Terminator
As I said, i'm not 100% sure this applies to the MkII.