Ok simple question for you. In DS, Differential Backups are relatively/infinitely faster to complete, I get that. And Differential Restores, well they will/should be as current as the last one taken & stored. I believe I have that line of thinking right. But what I would like to ask is as opposed to a only a single Full BackUp, wherein if any is there a difference in taking single differential partition backups different from incremental's and which has the most tendency to swell or increase the size of the BackUp after several of them are added? Thanks. This is very enlightening and useful discussion on DS and the better understanding of some of it's puzzle pieces into layman's terms for us.