Check out this article from kenstone.net regarding large scale p2 production. One of the challenges with P2 based cameras (like the Panasonic HVX-200) is that you can’t feasibly maintain your footage on the original media. Even on a major production, burning through $30,000 in p2 cards every day isn’t a realistic option. So, you’ve got to come up with a workflow to offload that content as it’s being shot. The article goes into great detail about the process being used on the production of a significant TV pilot.