WebSphere Extended Deployment, Version 6.0.x
             Operating Systems: AIX, HP-UX, Linux, Solaris, Windows, z/OS


Topology design

Install the product first as a simple topology configuration to familiarize yourself with its features in a test environment. When you are familiar with the advanced features, you can design advanced topologies that apply specifically to your application server environment.

The following graphic represents a supported topology of the product. In this topology, the on demand router tier, showing multiple ODRs, is between the HTTP server tier and the application server tier. The ODR, with the assistance of the autonomic managers, categorizes and prioritizes the work before routing work to the appropriate nodes. The potential nodes are marked with a circle. The deployment manager is the centralized management communication vehicle, as indicated by the dotted lines.

Install the deployment manager on a separate workstation from the application server nodes so that an outage of a single node, either planned or unplanned, does not impact both the application serving capacity and management capability.

When you are familiar with the product in a simple topology, you can add layers of complexity to your test environment. Include a firewall to secure your environment, and stress test to see the product features in action. Typically, when the workload increases, you must ensure that you have enough resources to manage the workload and that the resources configure and function together. You can also include Internet Protocol (IP) sprayer in this configuration to eliminate any single point of failure, and make this topology highly available. An IP sprayer distributes requests from one IP address to multiple IP addresses.

Figure 1. A simple WebSphere Extended Deployment supported configuration WebSphere Extended Deployment HTTP topology



Related concepts
Installation prerequisites
Related tasks
Preparing WebSphere Application Server Network Deployment to install the product
Installing the product
Planning the installation
Concept topic    

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Last updated: Oct 16, 2009 11:05:04 AM EDT
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