Yes...the way to go with back-ups, particularly if you are thinking ahead, is via a,Home Server. I am running the HP MediaSmart EX470 to take care of all my extensive photo & documents and find it very efficient. The back up each day only takes minutes as the server only needs to back up fresh data added since your last back up. I have my desktop, laptop & wireless router all "hooked up" to the server and so far no problems.
Well worth a look at !!