It seems to me that Hal Merrit's stepwise approach will work. I think it
will, however, require an intermediate IODF, in which the 2 new CUs are
only defined to the two channels that will be offline when I do the
first activation. (Also the two CUs I want to get rid of will only be
deleted from the two off line channels.) Then I vary those two channels
online and the other two channels offline and activate the configuration
I really want, the one with the two new CUs that will handle the new
DASD and the two CUs that have been handling all the old DASD volumes.
and with the two new CUs defined to all four channels. (Gone too will be
the two CUs that I am deleting.)
Tom Sipusic
Kevin Neubert wrote:
Except for older CF stuff like TYPE=CFR, adding/deleting partitions and
devices not defined with the dynamic feature I don't recall having to
perform many PORs...
Paths to the control unit should be unique. See CUADD, etc. What do
your CNTLUNIT and IODEVICE statements look like? What is the total disk
capacity (ADDRESSes) you desire?
1024, the maximum that can be defined to an ESCON channel.
Regards,
Kevin
Hal Merritt wrote:
Try a stepwise approach. Take two channels offline, reconfigure, and
bring them back on line. Then take the other two off and do those.
Or do the channels one at a time if you cannot tolerate two off at the
same time.
That worked for me when we did a 'hot' migration from a Shark to a
DS8100. We moved the whole farm without an IPL, let alone POR.
HTH and good luck.
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of Tom Sipusic
Sent: Thursday, January 04, 2007 11:55 AM
To: IBM-MAIN@BAMA.UA.EDU
Subject: Dynamically Activate additional CUs on Shark
Until now my Shark has been defined as two control units attached to
four channels.
After adding additional disk capacity it will appear to be four control
units on those four channels.
I would like to dynamically activate the two new control units and
associated I/O devices.
When I tried to do this, it failed to activate. It seemed that the
channels had to be offline,
but the existing Shark DASD has to be online; so we took an outage and
did a POR. Was the POR unavoidable? I ask because now I have to change
the definitions of the new CUs, giving them different LCUs, and I fear
that we'll have to do another POR unless one of you can show me how I
can do a dynamic activation here.
Tom Sipusic
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