In addition to the general Java ES 7 system requirements described in Platform Support and System Requirements in Sun Java Enterprise System 7 Release Notes, it is important to review the system requirements for the individual component products being installed. The following list provides links to the relevant component product documentation.
Hardware and Software Requirements in Sun GlassFish Enterprise Server v2.1.1 Release Notes
Supported Platforms in Sun Java System Web Server 7.0 Update 6 Release Notes
Hardware and Software Requirements in Sun Java System Web Proxy Server 4.0.11 Release Notes
Software and Hardware Requirements in Sun GlassFish Web Space Server 10.0 Installation Guide
HADB Requirements and Supported Platforms in Sun GlassFish Enterprise Server v2.1.1 Release Notes
Enterprise Manager components