Whoever created the Config can run the WWPN Prediction Tool and get you the new WWPN's in advance.
The tool is on IBM Resource Link and requires information from the configuration. It's been a while but I think I had to provide the configuration control number as input to pull the info for a machine that was not installed yet.
Question:
Where can I get more information on the WWPN prediction tool?
Answer:
For more information on setting up a SAN using the WWPN prediction tool, refer to the IBM System z
enhancements Hardware Announcement 109-230, dated April 28, 2009.

Craig Moody
System Z Technical Specialist
Levi, Ray and Shoup, Inc
2401 West Monroe St
Springfield, Il 62704
217 793-3800 x1813



-----Original Message-----
From: Linux on 390 Port [mailto:LINUX-390@VM.M...] On Behalf Of Mark Post
Sent: Tuesday, May 01, 2012 3:12 PM
To: LINUX-390@VM.M...
Subject: Re: question migrating an LPAR full of guests to a new machine

>>> On 5/1/2012 at 03:38 PM, Bruce Lightsey <Bruce.Lightsey@ITS....> wrote:
> Our storage guy asked about NPIV and WWPN names - all I could do was give him
> my best dumb look ( I'm a dba, not a sysadmin or systems programmer ). So,
> what should we expect ?  I don't think networking or CKD dasd will be an
> issue but I have no idea how the SAN will react to having a different
> mainframe replacing the one it knows.

You should expect that everything that the SAN sees will be different.  The mainframe should see exactly the same things it does now, assuming the SAN administrator is able to figure out what the new WWPNs for the z114 are going to be.  That would be a tedious job if it weren't a push-pull.  Since it is a push-pull, I'm not sure how they 're going to be able to do it in a reasonable amount of time.


Mark Post

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