Building a Cluster Infrastructure with Web AS Java 

You can find the complete documentation concerning the possible system variants for SAP NetWeaver AS in the SAP NetWeaver Master Guide on the SAP Service Marketplace at the following address:

 service.sap.com/instguidesNW7.0  ® Installation

In short, there are the following different installation scenarios for the SAP NetWeaver Application Server.

Server

You can run the following usage types to build your SAP System:

AS ABAP and AS Java Add-in

A system that includes both AS usage types can run both Java and ABAP applications. For more information, see SAP NetWeaver Application Server with ABAP and Java.

For large installations with several SAP NetWeaver AS instances, you can use the SAP Web Dispatcher, to have a defined access point for your system and to implement load balancing.

AS Java only

You want to use the SAP NetWeaver AS for Java applications in productive operation. The architecture of such a system is described in the Java Cluster Architecture.

For large installations with several SAP NetWeaver AS instances, you can set up an intermediary server as a defined access point as described in Using an Intermediary Server to Connect to the J2EE Engine.

Development Environment: SAP NetWeaver Developer Workplace

You can install the following components:

·        SAP NetWeaver Developer Studio

·        AS Java