ADSM-L

reclamation vs backup stgpool

2001-02-01 11:28:29
Subject: reclamation vs backup stgpool
From: Arnaud Brion <Arnaud.Brion AT PAC.PANMAIL DOT COM>
Date: Thu, 1 Feb 2001 17:14:52 +0100
Hi *Smers !

I'm facing an embarasting situation since I changed the way our daily job  runs 
: I start a reclamation job, by decreasing the rec parameter to 50 % on all 
storage pools every morning at 3:00.
Two hours later I start a backup stgpool job, on all storage pools too, and 
what happens is that most of the backup stgpool processes are waiting for a 
free drive to begin.
This should never happen, because of the preemption system included in TSM, 
that avoids this kind of painfull sitation : backup of stgpools has a higher 
priority than reclamation, so why do I have this problem ? ( nopreempt 
parameter is set to no)
Did anybody face the same situation, and was it solved ?
Is there a way limiting the number of drives used for reclamation ?
I'm working with two 3575 libraries, each of them has 4 Ultrium drives, we're 
using TSM 4.1.1 on an AIX 4.3 server.
Thanks for your precious answers ....
Arnaud
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