Mirror whole Server / only some Services
Now you can set a Server is Mirror from xyz. But the main Problem is if you want to set up a master slave dns system you can set the server is mirror from master. But you mirror also the databases and you cannot create databases only on the slave server. So it should be possible to choose. Is Full Mirror of xyz or is mirror for service dns if xyz for example.
To upload designs, you'll need to enable LFS. More information