[From IBM]
This article provides step-by-step instructions for configuring connectivity to remote DB2® instances using DB2 Enterprise Stage. In addition, the authors compare the performance of DB2 API Stage with DB2 Enterprise Stage running in the same environment.
Introduction
WebSphere DataStage is one the foremost leaders in the ETL (Extract, Transform, and Load) market space. One of the great advantages of this tool is its scalability, as it is capable of parallel processing on an SMP, MPP or cluster environment. Although DataStage Enterprise Edition (DS/EE) provides many types of plug-in stages to connect to DB2, including DB2 API, DB2 load, and dynamic RDBMS, only DB2 Enterprise Stage is designed to support parallel processing for maximum scalability and performance.
The article continues at http://www-128.ibm.com/developerworks/db2/library/techarticle/dm-0609xu/?ca=dgr-lnxw25DB2EnterpriseStage