Hi Paul,
Thanks for your concern. Its a minimum of 5 GB that a tape can contain. The
tape grows tilll the max vol size.
Since the problem appears confusing, I'l narrate some details
1. We have say 10 TB of VTL, I use 3 TB a day, The VTL shd ideally last 3
days. But say if my vault does not complete on time, I have to free some
medias from the ones on VTL which have already been duplicated.
The more I free, the more the operator uses. He fires atleast 120 streams at
once on the system during peak.
What I have now concluded from the lists suggestion, is that increasing the
MPX value of the media will help in consuming less media ids & shd i set a
policy for limiting number of conseq streams,.
About the total number of media id {880} I'll check and let u know.
Regards,
PP BIJU KRISHNAN
On 9/5/06, Paul Keating <pkeating at bank-banque-canada.ca> wrote:
>
>
>
>
> --
>
> -----Original Message-----
> *From:* veritas-bu-bounces at mailman.eng.auburn.edu [mailto:
> veritas-bu-bounces at mailman.eng.auburn.edu] *On Behalf Of *Veritas
> Netbackup
>
> Basically I would like to use less media ids and hence increase tape
> utilization. the VTLs can grow from 5GB and above.
>
> Can you set the tape size to start at a value higher than 5GB?
> I still really don't understand the issue.
>
> You have 4 drives, each will use a tape, obviously......but no more than 4
> tapes can be used at once, as you only have 4 drives.
>
> so if you start 10 backups, and have 10 streams per backup, then you'd
> have 40 jobs running to 4 tapes, and 60 jobs queued.
>
> correct?
>
> can you provide more clarification?
>
> your data has to be all backed up, if you've got 10 TB, you've got 10TB,
> there's no question there.
> If you want it backed up to fewer virtual tape IDs, then define your
> virtual media as starting at 100GB or larger, is that possible with the
> CDL?
> Why the 880 ID limit? is this a limitation of the CDL? Your license?
>
> your multiplex level x your number of drives defines tha max number of
> jobs that can run....not the number of policies you fire.
>
> f'rinstance, I fire almost all of my policies at once...a couple hundred
> clients, but with 3 drives x MPX=8, a maximum of 24 jobs can run at
> once.....when a job is finished, if another job is queued, it writes to the
> same tape until the tape is full.
> what defines the max size of your virtual tapes?? could that be a problem?
>
> Paul
>
>
>
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