Yeah but, what if some client comes in, and throws $100,000 at your feet, and parks his truck in the control room, and runs over it then?
It's ALWAYS good, ALWAYS good, ALWAYS good to have a redundant backup going on. I'm a firm believe in CYA (Cover Your Ass). RAID set up, 300GB external archive, a couple usb drives, and back ups in different locations (PGT & Weatherman has weekly full backups on HD, and 1 on disc and 1 on a server wherever godaddy is located at lol.