Think this is the right topic, here goes 
We bought a Buffalo Linkstation Live some time last year (This one:
) as a back-up system but we've started to find that lots of single copy files are ending up on it. So its now time to back the linkstation up too. I was wondering if anyone has any ideas on a drive/drive system that would be compatible for the automatic back-up feature. It has two usb ports which would be ideal to utilise if the automatic back-up will a hard drive on one of them.
your thoughts, preferences and advice would be much appreciated,
Sam
We bought a Buffalo Linkstation Live some time last year (This one:

your thoughts, preferences and advice would be much appreciated,
Sam