It would all depend on your hard drive. Firewire if of course, capable of 50MB/s, and digital video only requires 3.7/3.8MB/s. From what I've been reading, drives in Firewire enclosures have a sustainable transfer rate of over 10MB/s, no problem there. But as for realworld testing, I'm still dreaming about an external FW HD.
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Why 1984, won't be
like "1984"