Deploying FileMaker server across multiple machines
In many environments, a single-machine deployment provides sufficient performance for hosting FileMaker WebDirect solutions. However, if your server regularly has close to 100 FileMaker WebDirect clients, you can deploy FileMaker WebDirect secondary machines in a multiple-machine deployment, to allow additional clients to access FileMaker WebDirect solutions or to enhance the security of server components.
If you're not hosting FileMaker WebDirect solutions, you don't gain performance improvements from a multiple-machine deployment. But with a multiple-machine deployment, you can place the most sensitive data residing in the Database Server behind the firewall and give clients access to secondary machines placed in front of the firewall.