SanDisk High Endurance MicroSD Memory Card

[backofbeyond]

The cameras I use for work have (mostly) double card slots so you can write each picture file to two cards of two different types at the same time. Short of real time wi-fi-ing a third copy to a laptop and then into the cloud that's about as secure as it gets.

It's the smaller cameras that I take on trips that cause card problems though. There's not the same shoot-process-deliver-archive (or any combination thereof) pressure as there is on a paying job so it can be weeks before you're trying to remember where you put the full cards.

Generally I don't like buying cards that are the same visually as cards I already have. It's easy to get full and empty muddled up, format a full one on auto pilot when distracted and lose the lot. I've done it with cards (came close to doing it yesterday) and even did it a couple of times with film (put a used roll of file back in the camera and shot it again) when under pressure and distracted.

The little micro SD cards (the tiny little ones used in phones /action cams / drones etc) are really easy to lose, particularly if you're on location somewhere. Annoyingly, the last one I lost still had the camera attached to it.