About Us

Coho Data is delivering web-scale storage for the cloud generation.

Led by a team of XenSource/Citrix virtualization and storage industry veterans, Coho Data is enabling businesses of all sizes to build their own high performance web-scale storage for their private cloud. Inspired by the highly scalable, commodity-hardware based approaches of public clouds, the company is developing the first flash-tuned scale-out storage architecture designed for private clouds that delivers unparalleled performance and simplified management at public cloud capacity pricing.

Founded in 2011, Coho Data is funded by Andreessen Horowitz, Ignition Partners and has offices in Vancouver, British Columbia, Cambridge UK and Sunnyvale, California.

Learn more about our team, the members of our board, our investors, and what it's like to work at Coho.

Our Team

Led by founders with decades of deep storage and virtualization experience, Coho Data's world-class team is uniquely poised to tackle the challenge of rethinking how storage is delivered in tomorrow's datacenter.

Ramana Jonnala
CEO / Co-Founder

Ramana has been a part of every significant, transformative industry trend since the 90s: He started his early career with VERITAS Software in building large-scale storage architectures, and then led the product team at Xensource in delivering the first open-source virtualization platform. With a passion for building world-class teams that can drive these disruptive transformations, Ramana co-founded Coho Data to bring about the next era of the software-defined datacenter.

After Citrix acquired XenSource, Ramana served as VP of Citrix’s Virtualization Management Division and led the product team in delivering the first bare metal hypervisor for client devices. These experiences convinced Ramana that at the core of a successful startup is an extremely talented technical team which thinks about solutions to problems in a very different way. He is excited to be leading Coho Data in its mission to redefine storage for the next generation of datacenters.

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Andrew Warfield
CTO / Co-Founder

Andy is an established researcher in computer systems, specializing in storage, virtualization, and security. At Coho Data, Andy leads the technology vision and directs the engineering team in building elegant and functional systems that enable customers to focus on the data and applications instead of the underlying infrastructure that drives them. As a PhD student at the University of Cambridge, he was one of the original authors of the Xen hypervisor, and has since done award-winning research in virtualization and high availability. At XenSource and Citrix Systems, he was the Technical Director for Storage & Emerging Technologies.
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Keir Fraser
Chief Architect / Co-Founder

Previously a Co-Founder of XenSource and principal author of the Xen hypervisor, Keir brings his passion and expertise for designing lightweight but powerful software to Coho Data in his role as Chief Architect. He continues to be the lead maintainer of the Xen hypervisor, and leverages his deep background in virtualization to help drive the technical architecture for Coho Data’s approach to the software-defined datacenter.

As a world-leading virtualization expert and the lead maintainer of Xen, Keir has advised major chip vendors on how to best support virtualization in their architectures, and has frequently provided expert consulting on the application of virtualization in emerging datacenter products. Keir was previously a faculty member of the University of Cambridge Computer Laboratory. His doctoral work on multi-processor concurrency received the 2004 British Computer Society Distinguished Dissertation Award.

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Chris McBride
VP of Worldwide Sales

Chris has spent the last 27 years selling IT infrastructure to the Enterprise. For the last 15 years, Chris has focused on building and leading Global sales organizations for a number of successful technology start-ups in the network, chip and storage markets.

Prior to Coho Data, he lead the Global Sales and Service organization at BlueArc from 2007 - 2011 where his team reached third in global file system market share prior to the sale of BlueArc to Hitachi Data Systems. Prior to BlueArc, Chris lead the global sales teams for Aarohi Communications, a storage silicon start-up that was acquired by Emulex, and McData Corporation which went public in 2000.

Chris’s experience and track record of building and leading global sales teams that deliver solutions to the enterprise that help customers accelerate revenue, simplify management and reduce expense. This experience will enable Coho Data to accelerate the rate at which customers world wide leverage our disruptive web-scale storage technology to create competitive advantage.

He earned Masters of Science Degree from Auburn University.

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Tiffany To
VP Product Management & Marketing

Tiffany has built her career on launching disruptive technologies for the enterprise, and drives product definition and go-to-market strategy at Coho Data.

She has spent over a decade in high-tech product management and marketing roles at industry-leading virtualization and infrastructure companies including VMware, Intel and SGI.

Prior to Coho Data, she led marketing at storage startup, Nutanix, launching it from stealth mode and helping define the hyperconverged storage market category. As a product leader at VMware, she worked with Fortune 500 enterprises and service providers on virtualization product roadmaps, launched virtual desktop infrastructure (VDI) into the market, and executed on rapid growth strategies for this new product category. Tiffany’s earlier roles include product and technical marketing management at Intel, SGI and Symbol Technologies (acquired by Motorola).

Tiffany holds a degree in Computer Systems Engineering from Stanford University and an MBA from the UC Berkeley Haas School of Business.

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Naren Goel
VP of Finance

Naren brings more than two decades of extensive financial management and operational experience to Coho Data.

As VP of Finance, he is responsible for overall financial strategy and all aspects of Finance and Accounting. Prior to joining Coho Data, he held a number of finance leadership positions in the Corporate and Business Unit Finance at VMware. Previously, he held senior Finance and Operational roles at Intelliden, RSA Security, Hyperion Solutions, DEC and NCR.

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Ramki Ramakrishnan
VP of Operations

Ramki is a seasoned manufacturing and operations executive, bringing over twenty five years of experience to Coho Data in managing Hardware, Manufacturing, Global Supply Chain Management and Support organizations for high tech products.

At Coho Data, Ramki is responsible for Hardware, Manufacturing, Supply Chain vendor management and Technical Support. Prior to Coho Data, Ramki served as VP of Operations at Infoblox, where he built out the manufacturing, Supply Chain and Global Warranty support capabilities to meet the company's rapid growth through a successful IPO in 2012.

Prior to Infoblox, Ramki was VP of Hardware and Manufacturing for Citrix Systems' Application Networking Group. Ramki's earlier roles include time at Networking and Semiconductor startup and public companies such as Cisco, Cirrus Logic, LSI and National Semiconductor.

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Board Members

Peter Levine
General Partner at Andreessen Horowitz

Peter Levine is a partner at the venture capital firm Andreessen Horowitz. He was previously senior vice president and general manager of the Data Center and Cloud Division at Citrix where he was responsible for revenue, product management, business development and strategic direction. Peter joined Citrix in 2007 through its $500 million acquisition of XenSource, the leading provider of enterprise-class open source virtualization software, where he served as CEO, leading its 600 employees and establishing strategic agreements for the XenServer product family with customers such as Microsoft, Symantec, HP, NEC and Dell.

Prior to XenSource, Peter was a general partner at the Mayfield Fund. Before Mayfield, he was an early employee of VERITAS Software. During his 11-year tenure with the company, he helped to grow the organization to over 5,000 employees and more than $1.5 billion in revenue. Peter served as executive vice president and was responsible for worldwide marketing, OEM sales, business development and several product divisions. He began his career as a software engineer at Spectrum Software and was later a software engineer at MIT’s Project Athena.

Peter holds a B.S. in Engineering from Boston University and attended the Sloan School of Management at MIT. He is currently a management lecturer at the Stanford Graduate School of Business and a former entrepreneurship lecturer at the Sloan School. Peter also serves on the board of Actifio, Bromium, Coho Data, DataGravity, GitHub, Instart Logic, Mixpanel and Udacity, and is on the board of trustees for Boston University and the National Outdoor Leadership Schoool (NOLS), and the Dean’s Advisory board for MIT Engineering.

Follow Peter on his blog, and onTwitter

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Frank Artale
Managing Partner at Ignition Partners

Frank Artale is a partner at the venture capital firm Ignition Partners.

Frank Artale joined Ignition as a managing partner in 2011, bringing deep operational experience and insights from a 29-year career in the software industry.

He previously was an executive at Citrix Systems, XenSource, VERITAS Software and Microsoft, and also served as co-founder and CEO of Consera Software (acquired by H-P).

Follow Frank on his blog, and on

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Paul Sallaberry
Partner at Jafco Ventures

Paul Sallaberry is a software industry veteran with a career encompassing the build and operational management of Enterprise-class worldwide sales, marketing, technology and consultative services organizations.

As Executive Vice President of Worldwide Field Operations for VERITAS Software, Paul was responsible for defining strategy, managing operational activity driving revenue in excess of $1.5 billion, and achieving profit goals for the corporation’s global multi-tier sales distribution and professional services operations. Paul propelled the organization’s transition from that of an emerging start-up to its unprecedented position as the world’s leading provider of enterprise storage management solutions, and industry-recognized sales distribution powerhouse. Paul concluded his tenure with VERITAS in December of 2003 in the capacity of Executive Vice President of Sales Strategy, having successfully positioned the organization’s International growth territories for the next phase of sales expansion.

Paul served in the capacity of Senior Vice President of Sales at OpenVision prior to its acquisition by VERITAS, where he led the organization’s product and professional services revenue growth through IPO, and its subsequent acquisition. Prior to OpenVision, Paul held a series of positions at Oracle Corporation from 1989 through 1992, including Vice President of Oracle’s Vertical Sales Division, a capacity in which Paul defined Oracle’s vertical sales strategy, and evolved the organization from an emerging market opportunity to that of a major component of Oracle’s mainstream revenue.

Paul serves on the Board of Directors for Acquia, Calypso Technologies, Moovweb, Quorum Labs, Dataguise, Livemagic, and Coho Data. He also advises several young Silicon Valley companies. He is a member of the U.C. Davis Foundation Board of Trustees; serves on the Deans Advisory Council for the Graduate School of Management., and Is a member of the Sacred Heart Schools Board of Trustees Additionally, he is a frequent speaker at the Stanford Graduate School of Business and the UCLA Anderson School of Management. Paul holds a Bachelor of Science degree from the University of California, Davis.

Follow Paul on his blog, and on Twitter

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Ramana Jonnala
CEO / Co-founder

About Ramana

Andrew Warfield
CTO / Co-founder

About Andrew

Keir Fraser
Chief Architect / Co-founder

About Keir

Investors

Andreessen Horowitz
Andreessen Horowitz is a venture capital firm that provides seed, venture and growth stage funding to the best new technology companies. Founded by Marc Andreessen and Ben Horowitz, Andreessen Horowitz helps entrepreneurs become successful CEOs and build important and enduring companies.

Its general partners are Marc Andreessen, Ben Horowitz, John O'Farrell, Scott Weiss, Jeff Jordan and Peter Levine, all widely recognized experts in the creation, scaling and operation of high growth technology companies. The firm has $2.7 billion under management across three funds. Among its 90 investments are Airbnb, Apptio, Box, Fab, Facebook, Foursquare, Groupon, Jawbone, Lytro, Pinterest, SilverTail Systems, Twitter and Zynga. The firm was established in June 2009 and is located in Menlo Park, California. www.a16z.com

Ignition Partners
Ignition is a venture capital firm dedicated to helping the best entrepreneurs seize opportunity.With over $2B under management, Ignition invests in emerging and future leaders in communications, internet, software, and services across business and consumer targets.

Ignition brings together an unparalleled combination of domain focus, technical expertise, and global operational experience. Ignition’s partners are proven business leaders who have built some of the world’s most successful businesses of the last two decades, including Microsoft Windows and Office, McCaw Cellular Communications, AT&T Wireless and Starbucks. http://www.ignitionpartners.com

Working at Coho Data

Whether you join us in British Columbia, Cambridge UK or Silicon Valley, you'll be surrounded by colleagues who will help you grow and demand that you challenge us in return.

Who We're Looking For

At Coho Data, we're creating a culture that enables a brilliant, enthusiastic and highly-collaborative group of top technical and business talent to take on the challenge of re-imagining storage.

We have a highly qualified and motivated engineering team: a great combination of PhDs and experienced, pragmatic engineers, in a high-trust environment with the hardware and software resources available to do excellent work.

Our business leadership comes from seasoned storage and virtualization backgrounds, and they are excited to be building a world-class team to execute on a high-growth, rapidly ramping business that delivers unparalleled customer satisfaction.

Joining Coho Data is an opportunity to experience firsthand the growth of a dynamic high-tech startup, to make your own contribution and see it realized in a market changing product.

Interested? Go ahead, get in touch.
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