So I used dropbox as a beta user for close to a year now... the thing I really like about it is the "set it, forget it" feeling it affords me--it's there when I

So I used dropbox as a beta user for close to a year now... the thing I really like about it is the "set it, forget it" feeling it affords me--it's there when I need it, and stays out of my way when I don't. What I would really like to (eventually) see is some kind of a dropbox server I could download to e.g. my SAN (external hard drive attached to my router) that would work the same it does now, i.e. over the internet.