Hello list,

We perform duplications of a number of images every morning.  Most of these
images are on the same tape volume.  The problem is that the source tape is
constantly de-mounted and re-mounted during the duplication process. It can
mean the same tape is mounted 100+ times in a row in a 2 hour window. I am
using the following command :

bpduplicate -sl offsite_archive -hoursago 24 -dstunit flin-psgl -dp offsite

The class has mpx turned on, but usually only one backup is generated at a
time so the files are effectively not mpx'ed.  Regardless, I have tried the
command with and without the -mpx parameter and it doesn't make much
difference.

I have  .....
MEDIA_UNMOUNT_DELAY = 300
in bp.conf on the master and media servers.

Master is HPUX 11.  Media server is Solaris 5.7.  It's a full SAN/SSO
implementation of NetBackup 3.4.1

Any help reducing these tape mounts would be greatly appreciated !

Thanks.

Dean Allen
ISG - Storage Management
AXA Australia



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