Clustrix, the leading scale-out SQL database engineered for the cloud, today announced the completion of a $16.5 million round of funding by current investors Sequoia Capital, U.S. Venture Partners, ATA Ventures, and Don Listwin . This represents the company's third round of funding, bringing total capital raised to date to $46.5 million. With more than 30 customers worldwide, Clustrix will use the funding to expand distribution of its software to a variety of public and private cloud platforms.

Last month, the company released Clustrix 5.0 on Amazon Web Services (AWS). The AWS offering is the next step in the company's cloud strategy, following database-as-a-service announcements with Rackspace, GoGrid, Equinix, and BlueBoxGroup. In addition, the company published a breakthrough real-time analytics performance benchmark for its scale-out SQL database, demonstrating a 50x advantage compared to legacy scale-up databases on AWS.

"The combination of big data and cloud computing has broken the legacy database, creating an industry transition to new scale-out database platforms," said Robin Purohit , CEO at Clustrix. "The Clustrix scale-out SQL database is battle-tested in mission-critical customer applications all over the world, providing unprecedented levels of performance, scalability, and real-time analytics. In our next phase of growth, we are making it easy for developers to build their next great application on our platform."

"Clustrix has delivered on a complete reinvention of the relational database," said Chris Rust of U.S. Venture Partners. "The result is a highly differentiated platform that is ideal for the industry transition to cloud computing. The company now has the proven technology, experienced management, and customer traction to disrupt a $28 billion dollar market."

About Clustrix
Clustrix is the leading scale-out SQL database, engineered for the cloud. Clustrix provides a radically simple SQL database that enables applications to scale to unlimited users, transactions and data, while eliminating database sharding and automating fault tolerance. Clustrix nodes are in production in web-scale applications around the globe, with more than one trillion transactions per month running through Clustrix databases worldwide. Customers include Rakuten, CSC, Symantec, AOL, MakeMyTrip, Photobox, MedExpert, engage:BDR, AdScience, and Massive Media.

Clustrix has its headquarters in San Francisco, with branch offices in Seattle and London. It was founded and is led by executives from companies such as Isilon, AOL, HP, Mercury Interactive and VERITAS, and it is backed by Sequoia Capital, U.S. Venture Partners (USVP) and ATA Ventures. To learn more about Clustrix, visit www.clustrix.com, www.facebook.com/clustrix or www.twitter.com/clustrix/.