The more I read about Greenplum Bizgress, the more I like it. Bizgress is a cluster architecture for the open source and highly capable PostgreSQL relational database. Each table is “distributed” across segments. Greenplum promises ultra-fast performance on 100+ terabytes databases. A clustered , "massively parallel" architecture seems to support this claim. The base product, Bizgres (http://www.greenplum.com/products/bizgres.php), is said to support 10-300 gigabytes databases. Bizgress is open source and free. For 300 gigabytes to 100+ terabytes, you'll need Bizgres Plus (http://www.greenplum.com/products/bizgresMpp.php). It’s still open source but not free.
Runs on many flavours of Unix/Linux but not Windows (not that you would…)
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