On Mon, 10 Aug 2009 07:20:35 -0700, Walter Marguccio
<[email protected]> wrote:

>>>On Sun, 9 Aug 2009 21:01:42 -0700, Gibney, Dave <[email protected]> wrote:
>
>>> I'm led to understand that our four would LPARs push or exceed GRS ring
performance.
>
>>From: Mark Zelden [email protected]
>
>> I can't say I have been in any 4 system GRS ring (using XCF) shops
>> in the last 10 years, so perhaps someone with that configuration can share.
>
>we have such configuration. We recently added a 4th LPAR to our existing
>3-LPARs basic sysplex. I had the same concerns as Dave's, but after more than
>one month I can say GRS ring (exploiting XCF) is not a problem.
>I use RMF PM to keep on eye on XCF delays, and the average delay GRS shows
>is around 4 %.  Which is acceptable to me. We have still a 2086-230, z/OS 1.7
>everywhere except z/OS 1.9 on the sandbox LPAR.
>
>
>Walter Marguccio
>z/OS Systems Programmer
>BELENUS LOB Informatic GmbH
>Munich - Germany
>

Out of curiosity:  What type of XCF inks (ESCON or FICON)?   How many?
Do you have XCF transport classes set up / tuned?

Mark
--
Mark Zelden
Sr. Software and Systems Architect - z/OS Team Lead
Zurich North America / Farmers Insurance Group - ZFUS G-ITO
mailto:[email protected]
z/OS Systems Programming expert at http://expertanswercenter.techtarget.com/
Mark's MVS Utilities: http://home.flash.net/~mzelden/mvsutil.html

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