Greg,

Thanks a lot for your answer.

I am not sure how the tape was written the first time. "vmquery" shows
that all my tapes have media type "DLT cartridge tape (11)"

- Should I "bplabel -d dlt3" for each tape as soon as it expires?
- Why do you think changing from DLT to DLT3 won't change the performance?


Thank you,
Aleksandr

PS NetBackup 3.4 doesn't support DLTIV, but it supports DLT , DLT2 and
DLT3. I am using DLT7000 drives with DLTIV tapes and hope to get more
than 30-40G per tape.


On 11/6/07, Gregory Demilde <gdemilde AT gmail DOT com> wrote:
> Aleksandr,
>
> Actually, using DLT or DLT3 won't change you performance. Are you sure that
> the tape was written the first time in DLTIV format? The first time you
> write the tape, you are setting up the format of the tape.
>
> Greg
>
>
> On 11/6/07, Aleksandr Nepomnyashchiy <anepomn AT gmail DOT com> wrote:
> >
> > Dear NetBackup Gurus,
> >
> > I have inherited installation of NetBackup 3.4 with Sun L1000 library
> > and DLT7000 drives.
> >
> > My tape drive type is set to DLT. At the moment I am getting 30-40G
> > per DLTIV tape (with compression - using /dev/rmt/0cbn Solaris device
> > ).
> >
> >
> > Looks like NetBackup 3.4 supports DLT , DLT2 and DLT3.
> >
> > Should I change my tape drive to DLT3 ? Will I be able to get more
> > data per tape?
> >
> > Thank you,
> > Aleksandr
> > _______________________________________________
> > Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
> > http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
> >
>
>
>
> --
> Gregory DEMILDE
> Email : gdemilde AT gmail DOT com
> GSM : +352 691 915620
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