How can I set up a Redundant Array of Inexpensive Computers (RAIC) with FileMaker Pro 5.5 Unlimited to increase scalability, performance and robustness?

The FileMaker Web Server Connector, included with FileMaker Pro 5.5 Unlimited, lets you set up a RAIC*. A RAIC increases the scalability of your web-based FileMaker Pro solutions and helps ensure operation through fail-over situations. To set up a RAIC, an additional copy of FileMaker Pro 5.5 Unlimited is required for each CPU you wish to add to the RAIC.
* Computers running Mac OS X cannot serve as RAIC machines