Our codebase at my employer currently hovers around 5GB in SVN. Binaries and other generated code are intermixed for historical reasons. Removing them is a non-starter due to the amount of time it'd take to do so; the best solution I've been able to come up with so far is to break out into multiple SVN repos (one for images, one for generated language files, etc.) and then, hopefully, get code into Github while externally using the SVN repos for stuff that shouldn't be versioned in a distributed manner (versioning that stuff is useful as a convenience - avoiding conflicts, etc.).