backing up subversion

"svnadmin dump is the right way to go.

Usage of --incremental and --deltas is depending on the size of your repositories and the power of the server:
If you have the space, go for full backups each time, it´s the easiest to keep and play back.
If this runs too slow, go for --incremental. And if this backup is too big, go for --deltas.

Important: Whatever you do for backup, you must play it back to a test server to see if and how it works."

"The easiest method of making a backup is to use svnsync. This replays your commits to a backup repository, so if the master one crashes or is otherwise inaccessible, you can switch to the backup. You can also force the sync to occur in a post-commit hook so it is always up to date.

The only caveat is that you must copy the hooks and similar configuration (eg users, passwords) to the backup repository when you initially create it, and when you make changes. Svnsync only incrementally copies revisions after initial creation."