Hi All,
I have a mix of disk and tape backups. To disk I allow up to
20 jobs run concurrently. On my tape library I have 3 tape
drives, so only allow a max of 3 jobs to run concurrently.
I run Full backups once a month, Differentials once a week
and incrementals most days of the week. I would prefer to
give preference to a Full backup over a Diff or Incr and I'd
like to give preference to a Diff over an Incr.
So...
I set:
Full backups to have a priority of 30
Differential backups to have a priority of 40
Incremental backups to have a priority of 50
I figured that since I had concurrency setup with my "Max
Concurrent Jobs" setting that this would happen... If there
was a "fight" for a medium, with no other medium currently
free, that a Full would have preference to the medium over a
Differential which would have preference over an Incremental.
What I'm seeing is that if a Full is running on a certain
type of storage, only other Fulls will run on that storage.
If a full is running on one type of storage, other jobs
(Diffs and Incrs) will run on the other types of storage.
So, if I have a Full running to disk storage #1, then an Incr
will run to disk storage #2, but not #1. For disk storage I
mostly understand this.
This really becomes a problem for tape storage. I would like
to be able to run backups on the other 2 tape drives in my
library when a Full backup is running. I have several large,
slow servers which take upwards of 36 hours to backup and
during this time I can't backup anything of a lower Priority
than that system which I'm currently backing up.
Do I have to entirely can (forget) the notion of job Priorities
except in the cases where I absolutely want a certain job to
have exclusive rights to a backup medium?
Thanks, in advance for all the help,
-John
--
We have Enough Youth, How About A Fountain Of Smart?
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John M. Lockard | U of Michigan - School of Information
Unix and Security Admin | 1214 SI North - 1075 Beal Ave.
jlockard AT umich DOT edu | Ann Arbor, MI 48109-2112
www.umich.edu/~jlockard | 734-615-8776 | 734-647-8045 FAX
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