Architecting High Availability Using WebSphere V6 on z/OS

An IBM Redbooks publication

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

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Published on March 23, 2006

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ISBN-10: 0738494011
ISBN-13: 9780738494012
IBM Form #: SG24-6850-02


Authors: Patrick Ryan, Amr Khafagy, Brian De Pradine, Frank Pani, Hong Min and G Michael Connolly

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    Abstract

    In this IBM Redbooks publication, we describe how to configure the various components of an e-business solution to exploit the availability and scalability benefits of zSeries and Parallel Sysplex using multiple LPARs running Linux for zSeries and z/OS.

    This publication applies to WebSphere for z/OS V6, and is a continuation of the project evaluating high availability using WebSphere for z/OS V5 and V4. Presented in three parts (theory, systems setup, and availability tests), we cover workload balancing, the use of HTTP sessions, various architectures, and how to set up and test your infrastructures.

    Considerations for configuring the systems and applications in an e-business environment are also examined, and we address such questions as:

    - Should there be separate front-end systems for running the WebSphere Application Server?

    - How should e-business components be configured to minimize or eliminate the impact of a system outage?

    - What is the best way to communicate between the WebSphere systems and the back-end application systems?

    - What is the impact on the end user if there is a failure in one of the front-end or back-end systems?

    Table of Contents

    Part 1. Theory

    Chapter 1. Introduction

    Chapter 2. Considerations for scalability

    Chapter 3. Workload balancing

    Chapter 4. HTTP sessions

    Chapter 5. Architectures for availability

    Chapter 6. WebSphere platform messaging

    Part 2. System setup

    Chapter 7. Setting up the infrastructure

    Chapter 8. Setting up the z/OS infrastructure

    Chapter 9. Setting up the messaging infrastructure

    Part 3. Availability tests

    Chapter 10. Applications used

    Chapter 11. Planned Infrastructure outages

    Chapter 12. Unplanned outages

    Chapter 13. Application availability tests

     

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