None.
You will not find a single controller that does all that you need (RAID 5, passthrough, 6Gbps, SAS, cache) ... you will need to make a compromise on something. I don't know if the R210 II has the slots and resources to take two cards, but that is probably your only solution - one card for the internal storage and one for the tape drive (is this tape drive going to be internal or external)?