Maybe this helps you :

ADSM allows certain operations to preempt other operations for access to volumes
 and devices. For example, a
client data restore operation preempts a client data backup operatiopn for use
of a specific device or access to a
specific volume. See ADSM Administrator's Guide for details.

You can specify the NOPREEMPT option to disable preemption. When preemption is
disabled, no operation can
preempt another for access to a volume, and only a database backup operation can
 preempt another operation for
access to a device.

Syntax

>>-NOPREEMPT---------------------------------------------------><

herfried





Gerhard Rentschler <g.rentschler AT RUS.UNI-STUTTGART DOT DE> on 09.09.99 
17:20:38

Please respond to "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>



 To:      ADSM-L AT VM.MARIST DOT EDU

 cc:



 Subject: Priority of processes with regard to tape drives?









Hi,
I recently experienced a difficult situation. By accident a few users
started a number of large restores during the night which caused all
tape drives to be used for the restores. Therefore, no tape drives were
left for the migration of the disk pools.
I understand that restores have precedence over reclamaitions.
Furthermore, it is a good idea to give the DB backup precedence over
everything else. But I don't think it is a good idea to give restores
precedence over storage pool migration. This can cause all backup
sessions to stop.
Is there anything I can configure to prevent this problem (except
buying a large number of drives)?
Best regards
Gerhard

---
Gerhard Rentschler            email:g.rentschler AT rus.uni-stuttgart DOT de
Gerhard Rentschler            email:g.rentschler AT rus.uni-stuttgart DOT de
Regional Computing Center     tel.   ++49/711/685 5806
University of Stuttgart       fax:   ++49/711/682357
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