Marcin Kasperski writes:

1) Can I just backup Data.fs file (and expect that in case of failure I can install zope as usual, copy backed up Data.fs over the installed version, run and be happy)? This is a FAQ. Look into the list's archive.

2) What can I do in case I wish to backup only part of Zope database contents? In fact, I would like to run usual export on some folder - but I want to do it from cron or sth. similar without employing web interface. You can use "export/xmlexport" via ZClient.

There is a HowTo at zope.org about how to control Zope via ZClient from cron. Dieter