I want to know why there is no need of taking backup for the repository??? In normal svn server we can take backups of the svn repository.
We do not provide any tools with our Team server to backup your SVN repository. It does not mean that it's not possible or necessary to backup them. For now, you have to handle it by yourself.
If you are using the NTS2, it also embeds the license server and in that case, it's not mandatory to backup the license database itself.