I have the macbook air 11 and want to come up with a good solution for backing up my stuff. I bought myself a Seagate NAS 220 (2x1TB) and a 1 TB WD external usb drive. I want to have scheduled backups to my NAS and to the connected usb drive. I just started using Time Machine, but this software apparently only will backup my whole drive, I can't use it to archive my files. Lots of big files that I download I don't want to keep on my drive, but want to store them on the NAS and external usb drive only (without having to manually copying it over all the time). What is the best way to do this? What software are you guys using for this? I have the feeling that Time Machine is quite useless for what I want :S Thanks!