The benefits of MySQL Cluster have been realized in the most demand- ing data management environments in the telecommunications, finance, web and education sectors, for the likes of Alcatel-Lucent, Motorola, Cisco, Ericsson, Deutsche Telekom, University California Berkeley, Telenor and Zillow. Together with Sun’s global training, consulting and technical support services, MySQL Cluster can help ensure the success of your next mission-critical service with greater speed, lower cost, and less risk. The architecture of MySQL Cluster is designed for 99.999% availabili- ty, eliminating both planned and unplanned downtime. It achieves this via a distributed, shared-noth- ing architecture and synchronous replication of data which automat- ically propagates transaction infor- mation to all appropriate database nodes.