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Definition: Exadata

A database machine and storage server from Oracle. Using the Oracle Database, Exadata was initially designed with HP hardware for data warehousing. Incorporating the Sun Oracle Database Machine, Exadata 2 was launched in 2009 as a solution for both data warehousing and online transaction processing (OLTP). Available in half, full and multi-rack configurations, Exadata systems use Intel Xeon processors and InfiniBand channels. See database machine and InfiniBand.

Oracle Exadata Racks
High-end Exadata machines have reached "exascle" proportions. Each full rack contains two database servers and 14 storage servers with more than 700TB of solid state capacity. (Image courtesy of Oracle, www.oracle.com)