Cross-sysplex PDS/E support with MIM

Products

• MIM Resource Sharing (MIM)
• MIM Data Sharing (MII)
• MIM Tape Sharing (MIA)
• MIM Message Sharing (MIC)

Issue/Introduction

We are running MIM R12.5 on three MONOPLEX LPARS which share PDS libraries containing classic COBOL V4 load modules.

There is a need to convert from PDS to PDS/E format.  Unfortunately IBM doesn't support the propagation of PDS/E updates across sysplex boundaries.

IBM suggests having a duplicate copy of each PDS/E in each sysplex.

When a PDS/E is updated in one plex, we have to manually propagate the updates to the other plexes via XMIT or FTP.

Question: Does MIM (MII) provide any support for the propagation of PDS/E updates across sysplex boundaries?

Resolution

• MIM does not provide any means of automating the PDSE update process. MIM's only job is to propagate the SYSZIGW0/SYSZIGW1 enqs from one monoplex to the other.
• MIM does not support sharing of PDSE's across sysplex boundaries
• MIM allows the sharing of PDSE's as long as the systems are all MONOPLEX, and GDIF is managing SYSZIGW0/SYSZIGW1 and also PDSESHARING=NORMAL.
• MIM does not have any special handling of PDSE's. MIM only propagates ENQs, and on a monoplex system MIM will propagate PDSE ENQs, thus providing protection.

Additional Information

Refer to MIM documentation for PDSE Resource Sharing