At the moment I’d like to

At the moment I’d like to use my SATA drives independently. Capture to one, render to the next. I hope that I can do that. Could I set up 2 SATA drives for RAID to capture and have 1 SATA drive for rendering? My mobo only has 2 SATA plugs. I would need a controller for more. But I don’t have a PCI-X slot. My system drive will be ATA/IDE.