1778 Views 1 Reply Latest reply: Nov 26, 2010 6:06 AM by lllaass
A backup only backs up up certain items. Other items are synced from your library and other places. See the following for what is in a backup:
The transfer only transfers/copies iTunes purchases to a computer. It is useful when you buy items directly from the itunes store from your iPad. It is also very useful when your computer crashed and you do not have a backup. Thus, you can transfer music (which you can't redownload for free unlike app where your can).
Unless you cancel it, a backup is made every time you sync. Doing a backup alone is useful if you computer crashed and you do not have a backup. That way you can, along with doing other things like transferring purchases, get your iPad back to syncing with a "new" computer.