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RAC Server ComponentsOracle9i RAC can be implemented on a wide range of servers from a clustered group of single CPU Windows boxes to a cluster of 32-CPU SUN E10000 boxes. One of the more promising architectures for RAC is the blade architecture. In blade architecture, the servers are inserted into a pre-configured RAC similar to NIM (Nuclear Instrumentation Modules) in a NIM bin. Rather than a horizontal orientation they have a vertical one. Blade servers are essentially self-contained servers that rest on a single backplane. The backplane in a blade array provides power, network, and management connections, reducing cabling and overall component expense. Many blade architectures are hot-plugable, allowing online addition and removal of servers from the cluster. A typical blade setup is shown in Figure 4.11 (taken from http//h18000.www1.hp.com/products/servers). Figure 4.11: Example Blade Setup (Hp-ProLiant BL Server) In any architecture, Oracle9i RAC provides a scalable high performance environment for your database. Oracle9i RAC can also run on platforms that allow sub-setting of CPUs, such as the SUN E10000, E15000, and the HP Superdome. In the case of CPU sub-setting the single server is divided into multiple nodes, each running an instance of Oracle9i RAC. For more information, see the book Oracle 11g Grid and Real Application Clusters - 30% off if you buy it directly from Rampant TechPress . Written by top Oracle experts, this RAC book has a complete online code depot with ready to use RAC scripts.
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