You should also check out bacula http://www.bacula.org which includes
DVD backup in the beta version. It is a bit complex to set up as it
provides full enterprise-level backup. The manual is very extensive,
with lots of examples and there is an active mailing list. I have not
tried the dvd backup but I use the backup to hdd and tape and both work
very well.
--
Mark Pearson BSc (Computing)
Technical Support, Dept Nuclear Medicine
Concord Hospital, Hospital Road, Concord, NSW 2139, Australia
Phone:+61-2-97676339 or +61-297677450; FAX:+61-2-97677451
--
SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/
Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html