I want to Add RAID 5 but that needs an additional RAID card…
http://n40l.wikia.com/wiki/Raid
I want one that uses the existing backplane so I can attach/detach the drives in the same manner.
This card seems to be a winner:
HP Smart Array P410 controller
https://support.hpe.com/hpsc/doc/public/display?docId=emr_na-c01677092