PDSE sharing is only supported within a Sysplex. XCF signalling is required to maintain integrity. When you say that PDSEs can be fully shared, I think you are referring to Extended Sharing, not Normal Sharing. Following is from https://www.ibm.com/docs/en/zos/2.4.0?topic=neps-specifying-extended-pdse-sharing-in-multiple-system-environment but it has been this way for a very long time.
<quote> In a multiple-system environment, the system programmer uses PDSESHARING(EXTENDED) to share PDSEs at the member level. A system programmer must specify PDSESHARING(EXTENDED) in the IGDSMSxx member in the SYS1.PARMLIB on each system in the sysplex. Every system that is sharing a PDSE must be a member of the sysplex and have the sysplex coupling facility (XCF) active. </quote> People have violated these rules and gotten away with it, but that does not mean that it is safe to do so. -- Tom Marchant On Fri, 25 Nov 2022 20:00:42 -0600, Brian Westerman <[email protected]> wrote: >The GRS ring (not star) for a small site with 3 LPARs should have no problem >with >any slowdowns, and it will allow you to run fully shared PDS/e, catalogs, etc. > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
