It seems I would have to get some kind of portable storage device.
But which complies with all the following:
- replaceable battery
- upgradeable hard disk
- fast transfer
- external drive support
- reliable
- GOOD TECH SUPPORT
- It would also be great if the external drives could be formatted in other than FAT32.
I have used a Hyperdrive HD80 for years and never had any problems. It copies ~1 gig/min, more than 40 gigs/4 AA batteries (rated for 80 gigs, but never tried it), standard laptop drive inside, never needed tech support but they had great customer service during purchase. It is foolproof to use, drop in the card, turn it on, press a button and it copies, when you see a smiley face, turn it off and pull the card. The HD80 never edits the contents of the card, you have to erase using your camera. If you are shooting important shots, buy a pair and copy all of the cards twice before erasing.
Using it yesterday with images from a 5DII on 8 gig cards, it was copying slower (~600 MB/min) but didn't have any problems with anything that the cameras could throw at it.
I am pretty sure it's FAT32, but why would I want anything different?
Alternatively, cards are pretty cheap now, depending on how many gigs of pictures you are shooting, it may be cheaper and easier to just buy enough cards.