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Sun Java Enterprise System 2005Q4 Technical Overview

Service Quality Components

In addition to the system service components shown in Table 1–1, Java Enterprise System includes a number of components used to enhance the quality of services provided by system service components. Service quality components can also enhance custom-developed application services. The service quality components fall into the following categories:

Availability Components

Availability components provide near-continuous uptime for system service components and custom application services. The availability components included in Java Enterprise System and the services that they provide are shown in the following table. For more details on any component, see Availability Component Descriptions.

Table 1–2 Java ES Availability Components

Component 

Availability Services Provided 

Sun Cluster

Provides high availability and scalability services for Java Enterprise System, the applications that run on top of the Java Enterprise System infrastructure, and the hardware environment in which both are deployed. 

High Availability Session Store

Provides a data store that makes application data, especially session state data, available even in the case of failure. 

Access Components

Access components provide front-end access to system services, often secure access from Internet locations outside an enterprise firewall. In addition to providing such access, many provide a routing function as well. The access components included in Java Enterprise System and the services that they provide are shown in the following table. For more details on any component, see Access Component Descriptions.

Table 1–3 Java ES Access Components

Component 

Access Services Provided 

Sun Java System Directory Proxy Server

Provides security services for Directory Server from outside a corporate firewall. Directory Proxy Server provides directory access control,and routing for multiple Directory Server instances. 

Sun Java System Web Proxy Server 

Provides for caching, filtering, and distribution of web content for both outgoing and incoming internet requests. 

Sun Java System Communications Express 

Provides web-based access to Messaging Server, Calendar Server, and Directory Server, depending on configuration. 

Sun Java System Portal Server Secure Remote Access

Provides secure, Internet access from outside a corporate firewall to Portal Server content and services, including internal portals.  

 

Sun Java System Connector for Microsoft Outlook

Provides desktop clients using Microsoft Outlook with an interface to both Messaging Server and Calendar Server. 

Administrative Components

Administrative components provide management functions, such as configuration and monitoring, for system services. The administrative components included in Java Enterprise System and the services that they provide are shown in the following table. For more details on any component, see Administrative Component Descriptions.

Table 1–4 Java ES Administrative Components

Component 

Administrative Services Provided 

Sun Java System Administration Server (and Console)

Provides a graphical administration tool that lets you configure and manage Directory Server and Messaging Server. 

Sun Java System Directory Preparation Tool

Provides a script for configuring Directory Server with the schema needed to provision users for Messaging Server and Calendar Server. 

Sun Java System Delegated Administrator

Provides both command-line and GUI tools for populating user entries in Directory Server with user attributes needed by Messaging Server and Calendar Server.