Choosing a high availability configuration

A successful high availability implementation relies on the configuration of the main components of a Tivoli®'s process automation engine installation. To find the configuration that best suits your requirements, review the configuration methods and features that the components in your environment can provide.

To achieve a complete highly available system, the HTTP server, the application server, the database server, and the directory server in your environment must be configured. The components of a high availability topology can be installed on one or more computers.

Components of a high availability configuration

There are many component configuration combinations that provide high availability. The topology that you implement can be an adaptation of a commonly used topology, such as the load-balanced model or the warm standby model.

You can review the configuration options that are available for the database, the directory server, the application server, and the HTTP server that you use. If you use a shared disk or attached documents in your topology, you can make them redundant so that they do not represent a single point of failure.

The following diagram shows a product environment that consists of highly available components: The HTTP server, the application server, the database server, and the directory server operate with standby servers or in an active-active cluster to support failover.

The diagram is described in the main body of the text.


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