Release 10.1A: OpenEdge Getting Started:
WebSpeed Essentials

Multiple Web servers

One way to increase the throughput of the Web server is to have more than one and share the load. This is easily achieved using WebSpeed, because the Messenger configuration is identical on each Web server. To make more than one Web server respond to requests for the same Web site, you can use DNS round-robin aliases or a hardware redirection. For more information, see your router or DNS documentation.