IBM eServer zSeries 990 Technical Guide

An IBM Redbooks publication

Note: This is publication is now archived. For reference only.

Published 24 May 2004

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ISBN-10: 0738497657
ISBN-13: 9780738497655
IBM Form #: SG24-6947-01
(278 pages)

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Authors: Bill White, Mario Almeida, Dick Jorna


The IBM Eserver zSeries® 990 scalable server provides major extensions to the existing zSeries architecture and capabilities. The concept of Logical Channel Subsystems is added, and the maximum number of Processor Units and logical partitions is increased. These extensions provide the base for much larger zSeries servers.

This IBM® IBM Redbooks publication is intended for IBM systems engineers, consultants, and customers who need to understand the zSeries 990 features, functions, availability, and services.
This publication is part of a series. For a complete understanding of the z990 scalable server capabilities, also refer to our companion Redbooks:

IBM Eserver zSeries 990 Technical Introduction, SG24-6863
IBM Eserver zSeries Connectivity Handbook, SG24-5444

Note that the information in this book includes features and functions announced on April 7, 2004, and that certain functionality is not available until hardware Driver Level 55 is installed on the z990 server.

Table of contents

Chapter 1. IBM zSeries 990 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. Capacity upgrades
Chapter 9. Environmental requirements
Appendix A. Hardware Management Console (HMC)
Appendix B. Fiber optic cabling services

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