ADSM-L

Tape usage

1996-05-10 15:41:14
Subject: Tape usage
From: Christian Moser <Christian.Moser AT SCHERING DOT DE>
Date: Fri, 10 May 1996 14:41:14 EST
     FROM   :   Christian Moser
                M001CC.CMOSER
                Christian Moser at BE2006

     DATE   :   05/10/96
     SUBJECT:   Tape usage



     Hi,

     two SAP R/3 BACKINT nodes a running backups at the same time to our
     ADSM MVS server. Both are going with many parallel sessions to the
     same STGP hierarchy with collocation on for tape volumes. Many of the
     files in the parallel sessions are bigger than maxsize for disk.

     Logically two mounts occur, one for each node, many sessions are
     waiting for the tape volumes in use by the two sessions.

     BUT after about half of an hour ADSM decides to mount additional 5
     tapes (mountlimit=7) and starts real parallel processing for these two
     nodes. ITS GREAT, BUT WHAT TRIGGERS THIS BOOST?

     Kind regards
     Christian Moser,              Internet: christian.moser AT schering DOT de
     at SCHERING AG, 13342 Berlin, Tel.: (030)4681356 Fax: (030)46916719
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