My experience is with amanda, but I will be taking over a Bacula
installation in about a month when I change jobs, see
http://www.bacula.org/  Has anybody used Bacula and have any comments on
how it compares to amanda?  I'll also have a bit more budget to play
with in my new role, so might consider just changing to a commercial
backup system, but I'll also be handling much fewer machines, which will
greatly simplify the ongoing maintenance of amanda anyway.

Thanks,
--jonathan