Clustrix, the leading scale-out SQL database engineered for the cloud, announced today that it has closed a $10 million Series D financing round led by HighBar Partners ('HighBar'). The new funding will be used to further product development for Clustrix and support its rapidly growing customer base worldwide. This represents the company's fourth round of funding, bringing the total capital raised to $56.5 million.

HighBar joins existing investors Sequoia Capital, U.S. Venture Partners, ATA Ventures and Don Listwin, founder of Canary Foundation and former executive at Cisco and CEO of OpenWave. The board of directors welcomes new members John Kim and Roy Thiele-Sardina, Managing Partners of HighBar, and Mike Hodges of ATA Ventures.

'The need for operational databases that can analyze data in real-time has never been greater with the rapid growth of new hyperscale applications in business segments such as e-commerce, online gaming and advertisement,' said Clustrix CEO Robin Purohit. 'The additional funding will allow to aggressively pursue the rapidly growing MySQL/NewSQL market with our proven scale-out database technology.'

Clustrix is a distributed SQL relational database that enables high-scale transaction throughput, real-time analytics and simplified operations. Clustrix has been serving production workloads since 2008 and powers dozens of large-scale production customers around the world, including AOL, Rakuten Global Markets, and Symantec.

'With a solid product and the backing of executive leadership and investors, Clustrix is positioned as a game-changer,' said John Kim, Managing Partner of HighBar. 'We look forward to working with the Clustrix team to accelerate growth as they address the need for high-performance and scalable SQL databases.'

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 software is in production both as an appliance and on Amazon Web Services 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 Isilon, AOL, HP, Mercury Interactive and VERITAS, and it is backed by HighBar Partners, Sequoia Capital, U.S. Venture Partners, Don Listwin, and ATA Ventures. To learn more about Clustrix, visit www.clustrix.com, www.facebook.com/clustrix or www.twitter.com/clustrix/.