I was told by our Director of Photography that the P2 cards themselves carry metadata regarding how many times they've been used and reformatted. How can I find that data, so I can keep track of it and predict when a card's usable life is at the end? Thanks for your help.
If you use Panasonic's P2Formatter software it will display a bar when you format labeled something like "Card Life" or similar.
For all practical purposes the P2 technology will probably be obsolete before the card's life is affected. Even the E-Series is rated for approximately 2000 complete fill-ups before it will start to wear out and unless you are in ENG or recording very long events in HD you will likely never see that much use. I've got about 250 cycles on one card and the life bar on it is still at 100%.