Quote Originally Posted by phild View Post
+1 for multiple memory cards, I went OS this year for 6 weeks and took 2 x 64Gb cards. Despite having 2, I only filled one. (around 2000 images shooting Raw+JPG on 6D with 64Gb card....).

No additional storage was needed IMO, there's always a chance of losing the files, but that's also the case even while transferring to a backup device.

If I were buying again I'd buy 32Gb cards simply because losing the contents of a card is worse the larger the card.
Cannot agree. It really depends on the METHOD of backup, not the type of media used.