Hey, I own a Mac Pro (http://support.apple.com/kb/SP30) with 6GB RAM, 750GB SATA and 250GB SATA. I want a good backup option, I am thinking that RAID might be the best option. I know a lil bit about the topic, not a lot. Just that there are different kinds, 1.0.5.etc. and that they all do different sort of backup. Heres my questions I guess: Can someone simplify some more info on RAID? Should I buy a couple 1TB drives and use them instead of an external NAS? Can I do this w/o the internal RAID card? AM I ASKING DUMB QUESTIONS? Thanks for your help.