I've used external drives for years with mixed success. I began with using Firewire HD's I bought from Maxtor. Then I started just buying the External Enclosures and putting my own hard drive into it. That worked well, too, for the most part. Then I started having a bunch of problems with the drives freezing or not being seen by the computer... It got pretty frustrating. Then I started using external enclosures that accommodated both Firewire and USB2. Once I started using USB2 all my problems disappeared. I've got four external drives hanging off the back of the computer right now (720 GB of storage). Once I hit a terabyte of external storage I'll have a party! Good luck Andy Smith