[Veritas-bu] Scratch Pool Usage
2005-05-04 02:03:22
Please forgive me but didnt the old scratch pools need to be designed by
creating them from the volmgr/db the using "SCRATCH_POOL" in caps and no
extention from notepad? not from the gui? SCRATCH_POOL is a touch file
without an extention in the DB area that is utilized when a or any pool runs
out of space providing the correct barcode free tape exists in the
SCRATCH_POOL?
Eric
-----Original Message-----
From: veritas-bu-admin AT mailman.eng.auburn DOT edu
To: veritas-bu AT mailman.eng.auburn DOT edu
Sent: 5/3/2005 7:03 AM
Subject: RE: [Veritas-bu] Scratch Pool Usage
Are you talking about multiplexing or multi-streaming?
Multiplexing specifically allows multiple jobs to use one tape.
If you want each job to use its own tape, set multiplexing to 1.
Paul
> -----Original Message-----
> From: veritas-bu-admin AT mailman.eng.auburn DOT edu
> [mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] On Behalf Of
> Larsen, Errin M HMMA/IT
> Sent: May 3, 2005 9:54 AM
> To: veritas-bu AT mailman.eng.auburn DOT edu
> Subject: RE: [Veritas-bu] Scratch Pool Usage
>
>
>
> Hi again, everyone.
>
> I'm constantly faced with the below situations. When one of my volume
> pools runs low on tapes (lower than the multiplexing value), then
> backups take too long to run. I want NetBackup to grab
> enough tapes out
> of the scratch pool to max out the backups using the value in the
> multiplexing setting. Is this impossible? If so, is the Scratch pool
> useless with a multiplexing value greater than 1?
>
> --Errin
>
>
> > -----Original Message-----
> > From: veritas-bu-admin AT mailman.eng.auburn DOT edu
> > [mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] On Behalf Of
> > Larsen, Errin M HMMA/IT
> > Sent: Monday, May 02, 2005 1:20 PM
> > To: veritas-bu AT mailman.eng.auburn DOT edu
> > Subject: [Veritas-bu] Scratch Pool Usage
> >
> >
> > Hi NetBackupers,
> >
> > I want to know how NetBackup decides when and how to use
> > the Scratch pool. Here is an example. If I have a Policy,
> > let's say policy_foo, and it uses the volume pool, pool_foo,
> > and pool_foo has zero tapes in the library, will NetBackup
> > pull one tape from the scratch pool to fill it's needs, or
> > more than one? I'm having a hard time describing my problem here.
> >
> > Let's look at It the other way around. If pool_foo has 10
> > tapes, and policy_foo is configured with a value of 4 for
> > media multiplexing, when the job kicks off, NetBackup will
> > (attempt to) mount 4 tapes, pulled from pool_foo, and write
> > to all of them at the same time. If pool_foo has only 1 tape
> > in it, NetBackup will pull just that 1 tape (and therefore,
> > the backup takes a lot longer to run!). If pool_foo has 0
> > tapes, will netbackup grab just 1 tape from Scratch to write
> > to, or is it smart enough to grab 4 (so as to maximize the
> > multiplexing)? Also, If there is only 1 tape in pool_foo,
> > why doesn't NetBackup grab 3 tapes from Scratch to max out
> > the multiplexing?
> >
> > I hope those questions make some sense. Thanks in advance
> > for your answers,
> >
> > --Errin Larsen
> >
> > _______________________________________________
> > Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
> > http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
> >
>
> _______________________________________________
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>
>
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- [Veritas-bu] Scratch Pool Usage, (continued)
- [Veritas-bu] Scratch Pool Usage, Paul Keating
- [Veritas-bu] Scratch Pool Usage, Larsen, Errin M HMMA/IT
- [Veritas-bu] Scratch Pool Usage, Paul Keating
- [Veritas-bu] Scratch Pool Usage, Larsen, Errin M HMMA/IT
- [Veritas-bu] Scratch Pool Usage, Paul Keating
- [Veritas-bu] Scratch Pool Usage, Larsen, Errin M HMMA/IT
- [Veritas-bu] Scratch Pool Usage, Paul Keating
- [Veritas-bu] Scratch Pool Usage, Bobby Williams
- [Veritas-bu] Scratch Pool Usage, Larsen, Errin M HMMA/IT
- [Veritas-bu] Scratch Pool Usage,
Eric Ljungblad <=
- [Veritas-bu] Scratch Pool Usage, Paul Keating
- [Veritas-bu] Scratch Pool Usage, Bobby Williams
- [Veritas-bu] Scratch Pool Usage, Paul Keating
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