85155: Top 10 Tips for Managing Coupling Facilities and Sysplex Availability From IBM WSC Client Experiences

Project and Program: Core Platform, z/OS Systems Programming, Performance & Capacity Management Systems Management & Automation

Tags: Proceedings, SHARE DC 2025, 2025

At WSC, in several of our z/OS and sysplex health checks, CF performance studies, we came across with critical items that are missed while making architectural decisions, managing, monitoring CF workload and performance. We need to remember some basics as well as the dynamics,best practices for managing these HW and workloads health. CF LPARs and workload does not have same level of issues seen in other areas,but if they have, it will have huge impact to nearly everything in sysplex, It is the easist area to forget related to workload performance values and sysprog activities. Just as one basic question : Do you know your sync and async service time range ?' may not be answered faster than 'do you know your disk responsetimes ?. What are the different CF connectivity options ? How many links do you need? How sync /async conversion may have impact to your several architectural decisions.. Which data you need to analyze ,monitor ? How improvement of CF environment will improve your total mainframe environment ? In this session, we will discuss and try to share everything you need to know for managing CFs and CF workloads as system programmer as well as analyzing /monitoring them as system programmer/performance expert. This includes common mistakes we have seen in market during our WSC CF and Sysplex Health Checks and performance analysis including our client engagement related to special guidance for architectural decisions.

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