ADSM-L

Re: [ADSM-L] mediawait during backup to disk

2010-04-30 14:55:54
Subject: Re: [ADSM-L] mediawait during backup to disk
From: Robert Clark <robert.clark7 AT USBANK DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Fri, 30 Apr 2010 11:51:35 -0700
Are these windows clients? Is the dirmc (directory management class)
pointed to disk or tape?

You may have windows clients queueing up to write their directories to
tape.

[RC]



From:
Keith Arbogast <warbogas AT INDIANA DOT EDU>
To:
ADSM-L AT VM.MARIST DOT EDU
Date:
04/30/2010 08:09 AM
Subject:
[ADSM-L] mediawait during backup to disk
Sent by:
"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>



What does it mean when a node incurs mediawait during a backup to
disk?  The disk pool was not full, or even close to the Hi Mig
trigger.  The mediawait condition is reported by TSMManager, not the
Activity Log, but the node record does show roughly 50 % pct
mediawait .  Several clients showed this condition in TSMManager and
the Pct Mediawait field, and all during the same period of the night.
All tape drives would have been busy during this time, writing offsite
backups of disk pools at our other data center.

With hopeful best wishes,
Keith Arbogast



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