This IBM Redbooks publication discusses the IBM System z9 Enterprise Class (z9 EC), which offers a continuation of the IBM scalable mainframe servers. Based on z/Architecture, the System z9 Enterprise Class server provides major extensions by:

In addition to increased performance and expansion options, improved facilities for nondisruptive maintenance and growth provide better operational support and availability.

This book provides an overview of the z9 EC and its functions, features, and associated software support. More details are offered in selected areas relevant to technical planning.

This book is intended for systems engineers, consultants, planners, and anyone wanting to understand the new IBM System z9 Enterprise Class functions and plan for their usage. It is not intended as an introduction to mainframes. Readers are expected to be generally familiar with existing System z technology and terminology.

This publication is part of a series. For a more complete understanding of System z9 capabilities, also refer to our companion Redbooks:

IBM System z9 Business Class Technical Introduction, SG24-7241

IBM System z Connectivity Handbook, SG24-5444

Chapter 1. Overview

Chapter 2. System structure and design

Chapter 3. I/O system structure

Chapter 4. Channel Subsystem

Chapter 5. Cryptography

Chapter 6. Software support

Chapter 7. Sysplex functions

Chapter 8. Concurrent upgrades and availability

Chapter 9. Environmental requirements

Appendix A. Hardware Management Console

Appendix B. CHPID mapping tool

Appendix C. Fiber cabling services