Re: CL command to vary off a line description

It is what I inherited and I kept it as is. I'm very familiar with the *UNPROTECTED
Status and how to use them.
There are multiple partitions with specific BRMS control groups and tape categories.
For me as the only admin in a large installation with daily, weekly, monthly and other backups
It was easier to leave it alone for now.
Eventually I'll get to it.
I probably can leave all of the drives *UNPROTECTED and let the partitions grab the
various tapes regardless of category set on the control groups and tapes when the backups
kick off.

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message: 2
date: Fri, 6 Nov 2020 19:09:39 +0100
from: Marc Rauzier <marc.rauzier@xxxxxxxxx>
subject: Re: CL command to vary off a line description

Le 06/11/2020 ? 18:00, Mayer, Michael via MIDRANGE-L a ?crit?:

VRYCFG CFGOBJ(TAPMLB04) CFGTYPE(*MLBRSC) STATUS(*ALLOCATE)
RSRCNAME(TAP03)

When the backups have completed (via BRMS), we have a WRKCTLGBRM entry
at the end of it that Call a program that does this:

PGM
VRYCFG CFGOBJ(TAPMLB04) CFGTYPE(*MLBRSC) +
STATUS(*DEALLOCATE) RSRCNAME(TAP03) ENDPGM

Not sure to understand why you allocate and deallocate.

If you set the resource as *UNPROTECTED on all systems which share it, any system can use it when needed if it is not used by another one. And this resource allocation remains the same after a vary off/on sequence or an IPL.

I am just looking at KnowledgeCenter for V7R1, and they write that this valued is not recommended. I cannot see why. We use it for almost 20 years, and with old versions such as V5R2 and never got any issue. If the drive is used by a system, it cannot be use by another one, just like if you set the resource as *ALLOCATE.

They removed this recommendation on V7R2, V7R3, and V7R4.




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