Using XCF Note Pad might very well be a good choice. I *think* the service was introduced in z/OS 1.13, and enhanced in z/OS 2.2
Here are some links to a SHARE presentation from 2013 which describes the facility a bit and offers an example of how SAP has exploited it. https://share.confex.com/share/120/webprogram/Handout/Session13083/XCF%20Note%20Pad%20Slides%202013%20Feb.pdf https://share.confex.com/share/120/webprogram/Handout/Session13083/XCF%20Note%20Pad%20Handout%20%202013%20Feb.pdf The facility is described in the following IBM pubs for z/OS 2.2 SA23-1399-03 z/OS MVS Setting Up a Sysplex Chapter 6. Planning XCF Note Pad Services in a sysplex SA38-0658-02 z/OS MVS Programming: Sysplex Services Reference Chapter 17. IXCNOTE — XCF Note Pad Interface SA23-1400-03 z/OS MVS Programming: Sysplex Services Guide Chapter 12. Using Note Pad Services (IXCNOTE) I was in the process of composing a note about using the IARVSERV facility which permits shared access to Private Area and Data Space storage among cooperating address spaces, and which does not require elevated privileges (for example: Supervisor State; System Key; APF Authorization) for its use. One of the issues with IARVSERV is that the default amount of storage that can be shared is rather small (sixteen 4K pages); system exit IEFUSI can be used to increase this amount up to 2**31. And, of course, the storage is shared on a given z/OS system -- it is not cross system. Bob
