I realize that almost all Mac users are woefully ignorant of computer hardware technology - probably the main reason they opt for a Mac. But there are still thousands of dedicated Mac enthusiasts out there that seem to be informed, and yet I almost never hear of anyone using Raid 0 for increased performance. I wonder what is the point of spending untold thousands on a Mac Pro and NOT use Raid 0, especially when 36gb Western Digital Raptors (with the 16mb cache) are so cheap. 4 would be great for the OS and Applications and not cost much at all with a standard 7200 rpm large Sata drive for everything else and should give screaming performance. One could use the highly respected Raid 0 built into OS X. And is there any advantage of using Leopard with Raid 0?