Hi,

On 6/2/2006 9:00 AM, Christoph Litauer wrote:
> Dear bacula users,
> 
> I currently backup about 15 linux/windows servers to a LTO streamer. For
> increased restore speed I want no parallel (interleaving) backups on the
> tapes. So I set "Maximum Concurrent Jobs" of the tape storage to 1.
> 
> On the other hand, collecting data should happen in parallel on all
> clients. So I set "SpoolData = yes" and "Maximum Concurrent Jobs" in the
> sections "Director", "FileDaemon" (in clients bacula-fd.conf) and
> "Storage" (bacula-sd.conf) to 20.
> 
> I expected the clients to spool in parallel but despooling sequential.
> But the clients wait for each other doing the backups on after another.
> Did I miss something?

Not exactly, but there's another solution to your needs.

Activate spooling and allow multiple concurrent jobs. In this case, the 
data for one job will be written to tape consecutively (at least the 
amount that is spooled). Despooling happens per job, so during 
despooling there's only data from one job at a time going to tape.

If your spool space is smaller than what you'd need for all jobs you 
might end up with multiple chunks of data for a job, but these can be 
restored rather fast because Bacula can forward the tape between these 
chunks.

This is the sort of setup I prefer because it gives me the right 
compromise between overall backup speed and restore speed.

Arno


-- 
IT-Service Lehmann                    [EMAIL PROTECTED]
Arno Lehmann                  http://www.its-lehmann.de


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