on 6/2/05 6:26 PM, Russell Witt at [EMAIL PROTECTED] wrote:
Of course there is always the Tape Preferencing and Control Facility (TPCF)
within the MIA component of Unicenter CA-MIM. That has a couple of different
options for controlling the allocation of shared tape drives (either
dedicate
I know that asking two question is bad form. But I'm trying to save a
message slot. Both questions are about a z/OS 1.4 system.
Q1: DFHSM CPU Utilization
We are having a problem with DFHSM CPU utilization. It seems that no
matter when we schedule PRIMARY SPACE MANAGEMENT, somebody complains.
We run DFHSM in two address spaces for this reason DFHSM and DFHSM#. Take
a look at the HOSTMODE=AUX parameter and documentation. I classify the
primary DFHSM in SYSSTC and the auxiliary DFHSM in STCLO to provide a
service level roughly equivalent to production batch. We have not yet
cutover
John -
It's my understanding that this is how allocation currently works and I
don't know of anything in z/OS 1.6 that changes it. I believe that the
STK allocation code is supposed to do this for tape drives in an STK tape
library and perhaps for non-library drives as well, but I don't think
Message-
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of McKown, John
Sent: Wednesday, June 01, 2005 9:20 AM
To: IBM-MAIN@BAMA.UA.EDU
Subject: Two questions: Q1 - DFHSM CPU usage; Q2 - Tape Allocation
I know that asking two question is bad form. But I'm trying to save
on 6/1/05 7:00 PM, Ted MacNEIL at [EMAIL PROTECTED] wrote:
...
If so, how to do tell z/OS to spread the I/O around? I used
to have SELTAPE=NEXT
...
SELTAPE has gone the way of the Dodo.
The IEAOPTxx parm was dropped with ESA, IIRC.
It is now the lowest available UCB, just like DASD
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