Make sure your storage unit definitions allow multiple jobs per drive.

Be sure your policy allows multiple jobs (allow multiple data streams)
and "limit jobs per policy" to more than one.

Even then, you'll only share tapes if it's the same retention period and
tape pool. 

-----Original Message-----
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of
Aleksandr Nepomnyashchiy
Sent: Wednesday, November 14, 2007 2:42 PM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] More than one backup session at a time to the
tapedrive (multiplexing per drive) - never seen :)

Dear All,

My apologies for a dummy question...

VERITAS NetBackup(tm) DataCenter 3.4 System Administrator's Guide
http://dlc.sun.com/pdf/875-1921-10/875-1921-10.pdf  describes how to
setup "Maximum multiplexing per drive" (see "Managing Storage Units"
and then select "Storage Unit Type Properties - Media Manager Storage
Units"  pages 30-31).

I have set "Maximum multiplexing per drive" to 2, I see jobs queued in
the "Activity monitor", but I have never seen more than one backup
active.

What am I missing?

Thank you,
Aleksandr

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