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Data Center Technologies

Since the firm’s founding over 25 years ago, we have invested in some of the most innovative and significant technology companies of our time. Sigma knows what it takes to help entrepreneurs turn creative ideas into sustainable businesses.

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AutoVirt, Inc.
AutoVirt is the emerging leader in fully automated online data migration solutions for mid-range Windows environments. AutoVirt™ software offers customers a data migration solution that is easy to deploy with no incremental work, downtime, configurations changes, or software agents required.
CEO: Josh Klein
Managing Director: Robert E. Davoli
Nashua, NH
Centrify Corporation
Centrify’s auditing, access control and identity management solutions secure cross-platform systems, databases, and web and enterprise applications using Microsoft Active Directory. The Centrify Suite improves IT efficiency, strengthens regulatory compliance, and centrally audits and controls access to a heterogeneous environment.
CEO: Thomas Kemp
Managing Director: Peter Solvik
Mountain View, CA
Certeon, Inc.
Certeon's aCelera Virtual Appliance software is the industries' first and only virtual appliance for application acceleration. aCelera software reduces application response time over the WAN by more than 95% - accelerating more applications, to more users, for less cost.
President & CEO: Peter Dougherty
Managing Director: Robert E. Davoli
Burlington, MA
CiRBA, Inc.
CiRBA's Data Center Intelligence software enables organizations to rapidly analyze and visually map the safest path to an optimally consolidated and virtualized data center. Using a unique cross-platform approach, CiRBA addresses all configuration, workload, and business constraints required for success.
President & CEO: Gerry Smith
Managing Director: John Mandile
Ontario, Canada
Damballa, Inc.
Damballa provides real-time protection and remediation against bot-driven targeted attacks that evade other security technologies. Our approach monitors the Command-and-Control needed to launch attacks across the Internet so enterprise organizations can identify compromised systems in real-time and eliminate malicious activity.
CEO: Val Rahmani
Managing Director: John Mandile
Atlanta, GA
ExaGrid Systems, Inc.
ExaGrid is the leader in cost-effective disk-based data protection solutions. ExaGrid’s scalable disk-based backup solution is ideal for mid-market and small enterprise companies looking to quickly eliminate the hassles of tape backup while reducing their existing backup windows.
President & CEO: Bill Andrews
Managing Director: Robert E. Davoli
Westborough, MA
Expressor Software Corporation
Founded in 2003, Expressor Software develops next-generation data integration software for the global 2000.
CEO: Robert Potter
Managing Director: John Mandile
Burlington, MA
GlassHouse Technologies, Inc.
GlassHouse is a professional services firm, providing clients with insight and expertise into information management, storage technology and business continuance needs.
President & CEO: Patrick Scannell
Managing Director: Robert E. Davoli
Framingham, MA
Nasuni Corporation
Nasuni Corporation is building the next generation network attached storage device (NAS) for the enterprise using recent advancements in cloud compute and storage technologies to deliver a rich set of functionality at an exceptional value to our customers.
CEO: Andres Rodriguez
Managing Director: Paul Flanagan
Natick, MA
Replay Solutions, Inc.
Replay Solutions was founded in 2003. The goal was simple, to create a suite of products based on their ground-breaking Replay technology that would help software developers get their products done on time, with as few bugs as possible.
CEO: Larry Lunetta
Managing Director: Bob Spinner
Redwood City, CA
Tervela, Inc.
Tervela is the first appliance-based messaging technology provider. Our technology enables an order of magnitude improvement in both message routing capacity and latency reduction.
CEO: Eric Schnadig
Managing Director: Robert E. Davoli
New York, NY
Verivue, Inc.
Develops and markets high-performance IP platforms that enable network operators to distribute, deliver and manage enormous amounts of IP-based media traffic across a growing and diverse number of end devices; offering solutions for Internet video, cable video and IPTV applications.
CEO: James Dolce
Managing Director: Fahri Diner
Westford, MA
Zetta, Inc.
Zetta is enterprise class cloud storage. Zetta’s storage solutions host and protect data for enterprises while increasing IT productivity, data availability and data protection without the costs, complexities and risks of traditional storage hardware and software products.
CEO: Ali Jenab
Managing Director: Gregory C. Gretsch
Sunnyvale, CA