Installation and Upgrade Guides › SiteMinder Upgrade Guide › Planning an Upgrade › Common SiteMinder Environments › Single Policy Store, Multiple Policy Servers and Web Agents

Single Policy Store, Multiple Policy Servers and Web Agents

This SiteMinder environment contains a single policy store used by 20 to 100 Policy Servers located across the world. For performance reasons, the policy store and user directories are automatically replicated so that each Policy Server communicates with the closest replicated version. Each Policy Server communicates with 50 to 300 Web Agents.

The following figure illustrates this environment on a smaller scale:

Use the procedures outlined in this guide to upgrade this environment.