Software recommendation needed

[Pinkipad]

IF it is possible to backup my iPad to an external device (GoFlex Satellite), well, it is possible, so let me try again.

I need recommendations for software to backup my iPad - but -- I want to be able to pick folders/files as well as the destination. I guess what I want is similar to Windows backup software, where I choose what to backup AND where it goes.

I got a "drag and drop" instruction with the Satellite. I guess, being an iPad virgin, those instructions are too vague. I need to tell software what and where.

Please recommend your favorite backup software and, if possible, tell me why you prefer it.