I have some HDDs that will be used as raid5, and a SSD, and a DVD. Unfortunately, there are not enough SATA ports on the mainboard. So I bought a PCIe SATA card (Asrock). Should I plug the SSD into it? Or one of the HDDs of the raid5? Or maybe the DVD? In other words, should I use the PCIe card for the fastest or the slowest stuff?