All,
I have a better understanding of what is going on now. My Raid 0 with the 2 SSD's will be a separate array. I will install my OS on the RAIDR, and then use the software utilities that came with it to maximize its performance. My original idea was in fact to have a cache for a raid 0, however I see now why that would be counter productive. Maybe in the future PCIe based storage devices will be able to talk to each other allowing something to the effect of raiding multiple RAIDR type designs. Or maybe an easier way of saying it might be when 8+ lane devices are available and affordable.
Thanks