Duration
3 hours
Overview
In this course you will examine the I/O process and see how I/O performance problems are detected, and the metrics used to determine where a problem may exist. Methods used to improve I/O performance are also discussed.
Audience
This course is suitable for IT specialists whose role is to manage the performance and capacity requirements of a z/OS system.
Prerequisites
Completion of the following Interskill courses: IBM (z/OS) – Introduction to the IBM Enterprise environment, z/OS – Concepts and Components, z Performance – Introduction to Mainframe Performance
Objectives
After completing this course the student will be able to:
- Describe what I/O performance means and what z/OS Administrators can do about it
- Identify z/OS features used to measure I/O performance and how it can be improved
- Identify options used to improve I/O performance
- Explain the role of the capacity planner
- Identify data used to forecast future resource requirements
- Describe methods used to reduce resource usage
Course Content
z/OS I/O Performance
Identifying an I/O Performance Problem
Tools Used to Detect I/O Performance Issues
The I/O Process
Determining I/O Response Times
Performance Monitors
Interpreting I/O Related Data From RMF Reports
Channel Performance
Cache Performance
Improving I/O Performance
WLM and I/O Priority
Introduction to z/OS Capacity Planning
SLAs and SLOs
Long-Term Planning
Identifying Data Used to Determine Future Capacity Requirements
Detecting Unused CPU
Processor Capacity Reference for System z Tool
Planning for Coupling Facility Memory
Identifying Future DASD Space Requirements
Methods Used to Reduce Resource Usage
Adding Resources