I know this post is old, but I wanted to know if you ever found solution for this?
Help. I work for a small non-profit. We have three desktop computers, each with its own set of files. Lately, one person has been working remotely and needs to access the files from all three computers easily, to work on the files simultaneously with those in the office, and to save her updates back onto the office computers. We currently use Carbonite, but we can't save the files back onto the computer or work on the same file simultaneously. I considered drop box, but at any given time, we may need to access any of the files from any of the three computers.
Any suggestions for what software or hardware will help us?