The server is divided into hierarchical levels: server, adaptor, virtual host (also called vhost), and application. The server is at the top level and can contain one or more adaptors. Each adaptor can contain one or more virtual hosts. Each virtual host can contain one or more applications. You can add adaptors and virtual hosts to organize the server for hosting multiple applications and sites.

Each of these levels--server, adaptor, virtual host, and application--has distinct configuration parameters stored in XML files: Server.xml, Adaptor.xml, Vhost.xml, and Application.xml. There are also configuration files for information about administrators and logging: Users.xml and Logger.xml. The most important configuration parameters have been pulled out to the fms.ini file, which lets you use one file to configure the server. You can tune each level of the server to provide the highest quality of service for each application the server hosts.

For more information, see Configuring adaptors, virtual hosts, and applications in the Configuration and Administration Guide.