When you install a domain, the usage profile you select determines the features that are available by default. Here is a summary of the usage profiles:
developer profile - Provides a lightweight feature set optimized for developers, with one server instance and no clustering features.
cluster profile - Provides the complete GlassFish feature set, including clustering features.
enterprise profile - Provides access to features available by default only in the Java ES edition. In the GlassFish edition, this profile is only functional if you download the Java ES features separately and make global configuration changes. The Java ES features are HADB, Network Security Services (NSS), and optionally the Sun GlassFish database drivers.
For more information about usage profiles, see Usage Profiles in Sun GlassFish Enterprise Server 2.1 Administration Guide.