by Jordi Pujol-Ahulló.
Hi Ken!
In our Moodle instance, we set up capabilities in such a way that role editingteacher cannot backup nor restore moodle courses. That way, you automatically prevents teachers and other staff from making periodic backups.
Yeps... I am making an assumption: you institution has a corresponding backup system (in any form) so that you can restore the whole Moodle instance in case of failure. Individual loses (due to human errors) are not addressed by this mechanism though, since this backup would be of the whole Moodle, not just a course.
Best,
Jordi