
All my pics for the last 8 years remain on the high capacity SD card which was in the camera at the time they were taken. I don't reformat/reuse them. When one fills up I just plug in a new one.
I also have a searchable database which lists every .jpeg file with additional relevant details. Makes it very easy to find the specific pic I want to access and which SD card it's on.
So, should my hosting site starts playing silly b*****s, I can simply plug them back into my camera and upload them elsewhere. A bit time consuming if I needed to do a complete refresh but I would simply set it to run overnight while I get some kip. Rinse and repeat as required.