I normally just specify the media library in the control group. Yes, the same media library can be in multiple control groups. Our media library is a VTL with multiple drives defined. When it's 'at rest' it normally looks like this:
WRKMLBSTS
Device/
Resource Status Allocation
USSI7VTL VARIED ON
TAP01 OPERATIONAL UNPROTECTED
TAP05 OPERATIONAL UNPROTECTED
TAP06 OPERATIONAL UNPROTECTED
TAP08 OPERATIONAL UNPROTECTED
TAP09 OPERATIONAL UNPROTECTED
TAP10 OPERATIONAL UNPROTECTED
TAP11 OPERATIONAL UNPROTECTED
TAP12 OPERATIONAL UNPROTECTED
When in use it will change the allocation of one or more drives as needed by the backup. Many of our backups are set up in BRMS to stream out to multiple drives simultaneously. Something I wouldn't dream of doing without BRMS. I've done bare metal boot from tape restores from these backups so I trust them completely and they are not all that complicated, if you're using BRMS for the restore.
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Robert Berendt IBMChampion
Business Systems Analyst, Lead
Dekko
Fort Wayne
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Original Message:
Sent: Tue May 20, 2025 02:23 PM
From: Daniel Leite
Subject: BRMS TAPMLB* device question
BRMS has two different backup schemes with two different Control Groups. Does each control group require it's own TAPMLB* device and does each TAPMLB* device want it's own TAP0* device to use?
Is that a requirement or is there specific configuration that can make one TAPMLB* device work with one TAP0* device across both schemes and control groups?
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Daniel Leite
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