Is it possible to create \"federated\" Subversion servers? As in one server at location A and another at location B that sync up their local versions of the repository automatic
This is more or less the perfect use case for SVK. SVK is a command line front end for subversion that works with an entire local copy of the repository. So your commits, updates, etc. work on the local repository and you can then sync with a master. I would generally recommend SVK over plain subversion anyway as it makes a lot of things nicer. No .svn folders, better branching and merging, better conflict resolution.