Toni Mueller wrote :
> 
> * How do I specify that these backups go to - preferably - one file per
>   backup run, and
In Pool resource definition, you have to set :
Maximum Volume Jobs = 1
see 
<http://www.bacula.org/en/rel-manual/Configuring_Director.html#SECTION0014150000000000000000>

> * how do I migrate existing data to their own backup files.
> 
> The reason for asking is that I'd like to be able to shuffle around the
> individual backup files, and/or make copies of selected files on
> smaller media (eg. tapes), and to have my backup records in sync with
> "reality" (in the form of actual backup files that I could restore
> from).
Not sure I understand what you want. I think you should define:
  - dedicated job resources for these "existing data"
  - dedicated device resource(s) on the storage daemon(s) to write 
backups on the "smaller media".

You won't "copy" the backup files, you have to run job for this.
drawback : the FD runs two times for the same data and send them twice 
on the network.
Instead, you should use bacula 3.0.x, there's a new feature that would 
fit to your needs (Copy job type):
<http://www.bacula.org/manuals/en/concepts/concepts/New_Features.html#SECTION00320000000000000000>

> 
> So far, I have also defined a number of Storage elements in the
> director's configuration and also the Storage server's configuration,
> but I don't really see how to make this kind of use of it (using
> "label" with a template that includes the date?).
> 

see 
<http://www.bacula.org/en/rel-manual/Basic_Volume_Management.html#SECTION002612000000000000000>
and
<http://www.bacula.org/en/rel-manual/Variable_Expansion.html#VarsChapter>

-- 
Maxime CHARPENNE
Université d'Avignon et des Pays de Vaucluse - CRI
Tél. : +33 4 90 16 26 05

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