I have a dell PowerVault 220s and a Dell Poweredge 2800. When I attached the PowerVault 220s to the Dell PowerEdge using a split-bus with two cables 7 drives show up under Connector 0 on AHA-39160 (AIC-7899A) Ultra160 SCSI (non-raid) and the other 7 in Connector 1 on AHA-39160 (AIC-7899A) Ultra160 SCSI (non-raid), The Poweredge will not allow me to make a hardware raid 5 configuration for the PowerVault. I am currently using a PERC 4e/DI (embedded) Controller. Do I need to purchase a new controller to setup a raid 5 configuration? What controller should I purchase?