Corporate IT must maintain system availability and respond flexibly to rapid growth and change in their enterprise operations. Since database systems are used for critical business processes, anticipating growth requires a strategy for evolution that allows uninterrupted operations through system upgrades, as well as scalability to meet new QOS requirements, and all of this while seeking the best protection and return on IT investment. The Sun, Oracle, and Dolphin Interconnect partnership offers a complete system for Oracle9i Real Application Clusters (RAC) providing both scalability and availability in a single, easy to manage database configuration. Real Application Clusters software and the collection of hardware known as a cluster unite the processing power of each component to create a robust computing environment.

Source