As already mentioned, I am the proud owner of an online hard drive and I love it. Enough space for everything that's worth keeping, secure access over lots of different protocols (including rsync), an automatic backup function... It would be perfect if I had an Internet connection with an upstream of at least 100 MBit/s. But I haven't. (Actually the thing almost feels like a local disk when I use it from my computer at work. But that is an university network.) So I had to come up with a little more sophisticated architecture.