Redpaper - IBM Redbooks
Redpaper - IBM Redbooks
Redpaper - IBM Redbooks
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2<br />
Chapter 2. Design decisions that affect<br />
high availability<br />
This chapter examines design decisions that you need to address when<br />
configuring an HA system. It begins by taking a high-level look at what HA entails<br />
and continues by examining the details of designing an HA system on z/OS using<br />
WebSphere MQ and Message Broker.<br />
Remember that when you design a Message Broker configuration on z/OS which<br />
must satisfy stringent HA requirements, there are a number of factors you should<br />
consider. The main question is how to ensure that the availability targets for a<br />
Message Broker implementation are met?<br />
The most common implementation of Message Broker is as a central hub<br />
through which all messages in a messaging architecture are processed. Thus,<br />
the potential exists for Message Broker to become a bottleneck and single point<br />
of failure for the whole message processing network. Because of the business<br />
impact of the messaging hub failing, you should use a thorough approach when<br />
designing the queue manager and an HA implementation of Message Broker.<br />
© Copyright <strong>IBM</strong> Corp. 2004. All rights reserved. 9
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