I'm almost certain it's already come up, but this would be a great case where using a solid-state method of recording (e.g., Flash-based).
Assuming you were using DV camcorders, you could also pipe the video straight to PCs/laptops, but the storage requirements would not be trivial.
This is a problem I've considered for a while because I have done the same, but with audio instead of video. There I had the advantage of all the audio landing on SD media which was trivial to copy from at faster than realtime.
These are my first two books: X Power Tools, a thorough guide to the X Window System (O'Reilly, ISBN 9780596101954) and Fedora Linux: A Complete Guide to Red Hat's Community Distro, a practical hands-on book on Fedora (O'Reilly, ISBN 9780596526825).
Fedora Linux is also available for online reading through Safari and in downloadable PDF format from oreilly.com