So I want to be able to back up and secure at least 600gb of data, but preferrably more. A tb would be ideal. It would be mostly DVDs and music. I'd like something external. I want to make sure I can play the music as if it was on my computer and stream the dvds. Should I go for a raid 01 set up with like 4 250gb drives and set them up in a separate box? Any suggestions on the hard drives?