Arno Lehmann wrote:
> Hi,
> 
> 02.01.2008 16:53,, Weber, Philip wrote::
>>
>> Hi all,
>>
>> Bacula 2.2.4.  Solaris 9 Director & Storage Daemons.  Mix of Solaris and 
>> Windows clients.
>>
>> I am gradually moving some backups onto Bacula (from another backup 
>> system) & have noticed that Spooling of backups does not appear to be 
>> working as I expected.  I have a few 100 Gb set up for spooling, as I 
>> have some large clients.  However it seems that if only 1 large slow 
>> client is running, it will load the tape drive at the start of the 
>> backup to disk, and keep it open and unused until it starts spooling to 
>> tape at the end of the backup to disk or once the spool area has reached 
>> the threshold.  I had assumed (!) Bacula would mount the tape when it 
>> started reading from disk onto tape.  As I have separated out my Solaris 
>> and Windows backups into separate tape volumes, this leads to lots of 
>> jobs for the other OS, backing up.
> 
> The behaviour you observe is correct - Bacula only starts a job after 
> it can reserve the storage media it needs, and it doesn't release the 
> tape drive until that job is finished.
> 
>> A few questions to anyone who is using Spooling and Migration :
>>
>> 1. Would I be better off using migration instead of spooling?  e.g. back 
>> up everything to disk overnight and then later migrate to tape.  I am 
>> probably OK for disk space, and my main aims are to get backups through 
>> as quickly as possible and prevent my LTO2 drives from shoe-shining.
> 
> Migration would be the best approach then, yes.

One thing that came to mind: smaller jobs

Just in case it helps.

-- 
Dan Langille

BSDCan - The Technical BSD Conference : http://www.bsdcan.org/
PGCon  - The PostgreSQL Conference:     http://www.pgcon.org/

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