On Tue, 27 May 2008 13:58:19 -0700, Edward Jaffe <[EMAIL PROTECTED]> wrote:
>Mark Zelden wrote: >> Except for read only requests (even when mounted R/W). IIRC, those are >> handled from the local system regardless of the file system owner. >> > >Are you sure about that? I could be wrong, but I thought that all >requests, when mounted R/W, were function shipped. Is there a manual, >white paper, or similar reference that describes this processing >authoritatively? > Well, I did say "IIRC". :-) So I just looked this up in the planning manual. First a definitions of sysplex aware vs. sysplex unaware: "If a PFS allows a file system to be locally accessed on all systems in a sysplex for a particular mode, then the PFS is sysplex-aware for that mode. If a PFS requires that a file system be accessed through the remote owning system from all other systems in a sysplex for a particular mode, then the PFS is sysplex-unaware for that mode." And here is the part I remembered that lead to my statement: " For example, HFS is sysplex-unaware for read-write mode, because all non-owning systems must access read-write file systems through the remote owning system. The non-owning systems are said to be sysplex clients. However, HFS is sysplex-aware for read-only mode, which means that each system can access read-only file systems locally, and do not need to contact the owning system" 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 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
