If you are not familiar with GroupWise WebAccess, review GroupWise WebAccess Overview
in Installing GroupWise WebAccess
in the GroupWise 7 Installation Guide.
As you plan WebAccess in a clustering environment, you must keep in mind that WebAccess consists of two components:
WebAccess Agent (gwinter.nlm) that will be associated with a GroupWise WebAccess domain in the cluster
WebAccess Application (a Java* servlet) that will be added to your Web server. You can install the WebAccess Application on a clustered Web server or a non-clustered Web server. How to set up and manage a clustered Web server is beyond the scope of the GroupWise documentation. If you have not clustered your Web server, you can install the WebAccess Application on a server that is outside of the cluster where the WebAccess Agent is installed.