So I've successfully set up my own git server. A little background on it is:
Server: Ubuntu Git Serice: Gitolite Web Interface : GitWeb
Now a bunch of projects are going to be added to this server, my 10gig instance will easily be used up. My question is how can I now scale horizontally since git stores all the files on the file system?
Since all the repos (projects) are independent, it seems the obvious solution would be to partition the repos among several backend servers.
Of course, there's a lot more to it than that. For some more detail, check out how github works at https://github.com/blog/530-how-we-made-github-fast . I wouldn't be surprised if github were the largest git hosting platform on the planet, so if you adopt something similar to their approach I'd guess you're unlikely to run into scalability issues.
(And no, I wouldn't worry about that 10gig network connection(?) just yet..)