Thanks for confirming my own research on the subject.

Regards,

Mark Jacobs
________________________________________
From: IBM Mainframe Discussion List [[email protected]] on behalf of Mary 
Anne Matyaz [[email protected]]
Sent: Wednesday, May 02, 2012 9:07 AM
To: [email protected]
Subject: Re: zOS under zVM

Mark,

Here's my doc on the subject...

Mary Anne

Differences b/w running native LPAR and running as a z/VM guest

In a single system:

The only issue I’m aware of is some strangeness with your performance monitors.

In a SYSPLEX:

--A new CFRM policy is required, specifying SIMDEV for the coupling facility:

              CF NAME(CFCC1
                     TYPE(SIMDEV)
                     MFG(IBM)
                     PLANT(EN)
                     SEQUENCE(0000000CFCC1)
                     PARTITION(0)
                     CPCID(00)
                     DUMPSPACE(2000)

Type Number (TYPE) - SIMDEV specifies that this is a z/VM simulated   message 
device type.
    Manufacturer (MFG) - IBM® indicates IBM as the manufacturer.
    Plant (PLANT) - EN indicates Endicott as the manufacturing plant.
    Sequence # (SEQUENCE) - The 12-byte field will contain the CF Service 
Machine user ID    right justified. Pad all leading unused characters with 
EBCDIC zeros. For example, if a CF Service Machine of CFCC1 is specified, 
SEQUENCE is 0000000CFCC1. Your DR provider may have a different CF name.


--A different CLOCKxx member may be needed specifying SIMETRID:

TIMEZONE W.04.00.00
ETRMODE YES
ETRDELTA 10
ETRZONE YES
SIMETRID 00

--Possible CFSizing needed:

If you are on a processor that has a lower level of CF Code, you may need to 
resize your structures. For example, if your DR provider has a z10 (CFLEVEL 16) 
and you are running on a z9 (CFLEVEL 15), you may need to increase the storage 
size of the CF.


>It's been many, many years since we've run our sysplex under zVM. Our next DR 
>exercise will be hosted in a VM >environment and I'm looking for any 
>environmental setup concerns that I need to consider.

>I know that we'll have to change LOADxx, but I'm unsure about anything else.

>Any advice on what I have to do would be greatly appreciated.

>Mark Jacobs
>Time Customer Service

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