Bruce,

There are 2 types of wwpns.  The physicals will change when upgrading from
z9 to z114.  Starting with z196, we generate physicals instead of using
what is burned into the flash on the card.  So next time it will be easier
for physicals.

The NPIV wwpns might stay the same.  What you want to do is carry your IO
serial number forward, and avoid IOCDS changes.  Making logical changes in
the IOCDS for things like the chpid and css will change the NPIV wwpns.

If you can't carry your IO serial number forward, and/or you make IOCDS
changes, there is a tool on resource link called WWPN Tool.  You can use
this to get a spreadsheet of what the wwpns for the new machine will be.
The new machine does not need to be installed at all.

Regards,

Ray Higgs
System z FCP Firmware Development
Bld. 706, B42
2455 South Road
Poughkeepsie, NY 12601
(845) 435-8666,  T/L 295-8666
[email protected]

Linux on 390 Port <[email protected]> wrote on 05/01/2012 03:38:14
PM:

> From: Bruce Lightsey <[email protected]>
> To: [email protected]
> Date: 05/01/2012 04:10 PM
> Subject: question migrating an LPAR full of guests to a new machine
> Sent by: Linux on 390 Port <[email protected]>
>
> In the next two or three weeks we will have to move from our current
> z9 to a z114 and are trying to look for all of the "gotchas" involved.
>
> This is supposed to be a "pull-push" type of change with only the
> underlying hardware changing to start.
>
> Our current VM is our first experience with VM. We have never
> migrated a VM lpar to another machine( built new VM lpars on another
> machine, but never migrated).
>
> We are not going to change lpar definitions with one exception - we
> will be adding 1 IFL to the VM lpar.
> We won't be changing versions of zVM or Linux ( or z/OS on the other
> partitions ) or any application software.
> All consoles,network, and storage will be unplugged from the old box
> and plugged into the appropriate ports on the new box.
> All guests will, obviously, be shut down and restarted on the new
> hardware after zVM is up ( VM 5.4 ).
>
> 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.
>
> Thanks for any replies,
>
> Bruce Lightsey
> Database Administrator
> Mississippi Dept. of Information Technology Services
> 3771 Eastwood Drive
> Jackson, Ms 39211
> mailto: [email protected]<mailto:[email protected]>
> 601-432-8144
>
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