I have been reading about hard drives all over the place, and I still don't know enough to set up my Mac Pro optimally for home video and photography work. Here are a some questions I have. If you can answer even one, please reply. 1) I have read several posts by people who are using a fast drive as a boot disk. I was thinking of getting a Raptor for this purpose. If I make my fastest drive in the Mac Pro a boot drive, won't everything else (like my Applications and Home folders) automatically go there as well? 2) If I do dedicate a fast drive as a boot drive, can it also serve as a scratch disk, or will this significantly degrade performance? 3) I know the Mac Pro currently doesn't support hardware RAID internally, but can I buy an external FW800 hardware RAID 0 enclosure? Would this give me significant performance gains (as a scratch disk) compared to a single internal fast drive or two software striped internal fast drives? 4) How much difference does 8MB vs 16MB cache make? Currently I have a 320GB 7,200 rpm WD drive with 16MB cache as my boot/storage drive and a 250GB 7,200 rpm WD drive with 8MB cache as my Windows drive (Boot Camp). The latter came with the Mac Pro. I am planning to buy a couple smaller, faster drives or an external FW 800 enclosure and am not sure how best to go about it. No specific budget, but less is more . EDIT - If anyone knows good places/forums for me to read more about specifically this sort of thing, point me in the right direction! EDIT2 - Anyone out there?