On Tue, 27 May 2008 11:42:51 -0700, Edward Jaffe
<[EMAIL PROTECTED]> wrote:

>Mark Zelden wrote:
>> A properly configured shared file system in either a basic or parallel
sysplex.
>>
>> Have a look at the chapter on sharing file systems in a sysplex in the
>> UNIX System Services Planning manual.   I think the doc is pretty good.
>> If you have questions after that, let us know.
>>
>
>Exactly. There is no need whatsoever for parallel sysplex. Both zFS and
>HFS use USS file sharing support, which uses only XCF signaling and a
>couple data set ... no XES. Requests are "function shipped" to the file
>system owning system, so you get better performance on the image where
>the file system is mounted.
>

Except for read only requests (even when mounted R/W).  IIRC, those are
handled from the local system regardless of the file system owner.

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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