ADSM-L

Re: [ADSM-L] TSM only reads from COPY1 during DB backup

2007-04-25 10:34:51
Subject: Re: [ADSM-L] TSM only reads from COPY1 during DB backup
From: Richard Sims <rbs AT BU DOT EDU>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Wed, 25 Apr 2007 10:22:49 -0400
On Apr 24, 2007, at 3:23 PM, Orville Lantto wrote:

Has anyone else observed that TSM only reads from COPY1 of a db
volume mirror pair during DB backup?
Why do you believe it should do otherwise?  As exposited in the Admin
Guide manual, mirroring is for disk failover purposes.  You can
artificially cause both mirrors to be read, via MIRRORRead Verify,
but that's for paranoid circumstances rather than standard operation,
and exacts a performance penalty.

   Richard Sims