Rom dump?

[raidzero]

I am not sure if this has been asked before, it seems to me like it would have been, but searching for rom dump was not what I was looking for. I want to know how you extract an image of your phone (files and all). So basically I would always have a backup if anything ever happened, I could reflash it and have all my apps and settings the way they were when I took the dump. (lol)
I am not sure if that is what a rom dump is, but it sounds good to me. Thanks