Hi,

16.09.2007 11:50,, Tom Meiner wrote::
> Hi!
> 
> I have set up a bacula 2.0.3 server

Please upgrade to the latest released version as soon as possible.

> with an autochanger and several
> clients. My default pool directs to the tape. So my backup lasts a long
> time because all clients have to wait while one client does his backup.
> To speed up the backup I consider to create an additional disk pool as
> the default pool to get more then one client backed up simultaneous

First, you could think about setting up job concurrency and spooling. 
This can increase the overall throughput a lot.

> and
> than migrate the files to the next tape which lays on the tapes.

This would be a disk to disk to tape backup setup, also possible. 
Mainly you'll need concurrent jobs, I think.

> Although I heave read http://www.bacula.org/rel-manual/Migration.html
> and all the referenced parts of the manual I haven't found an answer to
> one of this questions.
> 
> 
> 1. Is bacula aware to update the bootstrap files
>    (/var/spool/bacula/client.bsr) after migrating the files from disk
>    pool to tape pool?

No idea currently.

> 2. Is it possible to begin to migrate the files automatically from disk
>    pool to tape if the disk pool grows up to i.e. 60%?

No. You have to start a migration either by schedule or by an external 
script which can rely on pool usage.

> 3. What is the best way to create this disk pool (2 files sized 1 GB
>    each?)?

That depends on the size of your backups. To be useful, you should be 
able to store one complete run of backups on disk - if 2 GB are 
enough, I doubt you'd notice an increase in throughput.

> 4. How big has this disk pool to be?

See above.

> What happens with the backup job if
>    the disk pool becomes full.

The currently running jobs will block and ask for new volumes.

> Does is automatically start the migration
>    and after that continues backing up that client?

No.

What you describe is spooling.

Arno

> 
> Tom
> 
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-- 
Arno Lehmann
IT-Service Lehmann
www.its-lehmann.de

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