Yes you can have more than 2G of central storage defined for an ICF
provided it is on a zSeries CPU with the right driver and CFCC level.

http://www-03.ibm.com/servers/eserver/zseries/pso/cftable.html 

I have an ICF on 2094 and a 2086 operating as CF each with 16G as only
central storage defined to the CF LPAR.  This support was not new with
2094 it's been in CFCC for a while.  A while seems to have been Level 12
which is supported on all the zSeries boxen 2064, 2066, 2086, 2084,
2094.

        Best Regards,

                Sam Knutson, GEICO
                Performance and Availability Management
                mailto:[EMAIL PROTECTED]
                (office)  301.986.3574

Everytime you look at the engine, you're looking at me. Everytime you
touch it, it's me. - The holodeck-simulated Leah Brahms to Geordi, "Star
Trek: The Next Generation, (Booby Trap)"
 

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of Ted MacNEIL
Sent: Sunday, January 22, 2006 7:00 PM
To: [email protected]
Subject: Re: Coupling Facility > 2GB of central

>Can I
have more than 2GB defined as central storage on my ICF, even if the
z/OS lpars are still running 31 bit mode.

No, not yet.
There is the concept of control/non-control storage.
CF-Speak for Central/Expanded.

I don't believe IBM has come out with 64-bit CF's, yet.
If they have, I missed the announcement.

Also, the mode you are using in z/OS is independent of the mode you use
in the CF.

-
-teD
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