I have a mini which is now three years old. I have recently treated myself to the iPad Air 2. The mini had become very slow and jittery so now I have the new one I would like to wipe the mini completely, restore it to its original state, and just reinstall a select few apps and my email program. My question is will the fact that it will also wipe all my photos and videos, which are now on my new iPad, affect the copies on the air 2 and my iPhone? Never really understood camera roll, photo stream etc! Thanks.