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REDWOOD CITY, Calif. – June 9, 2015 –In a recently published report from Dell’Oro Group, the trusted source for market information about the telecommunications, networks, and data center information technology (IT) industries, the Network Security Appliance (NSA) market declined six percent sequentially in the first quarter of 2015.

Virtual NSA appliances continued to show strong growth, up nine percent versus the first quarter 2014, on seven percent higher unit shipments.  In addition, virtual appliance revenue increased sequentially for the eighth straight quarter.

“We believe that virtual NSA appliances provide several advantages, and so we expect continued and significant growth in this segment,” said Casey Quillin, Director of Data Center Appliance research at Dell’Oro Group.  “First, virtual appliances provide greater flexibility than physical appliances, allowing for more integrated security through software configuration and scripting.  Second, virtual security appliances can also greatly reduce costs, due to their ability to be quickly provisioned, configured, and maintained compared to hardware devices.  Third, extensive server virtualization in the data center presents new security challenges since virtual- machine-to-virtual-machine traffic is more difficult to monitor than traditional network traffic.  Virtual security appliances are well-suited to monitoring these new vulnerabilities,” Quillin explained.


The Dell’Oro Group Quarterly Data Center Appliance Report offers complete, in-depth coverage of the market with tables covering manufacturers’ revenue, units shipped and average selling prices for Application Delivery Controller, WAN Optimization Appliances, and Network Security Appliances.  Each of these markets is further segmented by Physical and Virtual technologies. The Network Security Appliance market is also segmented by: Content Security, Firewall, IDS and IPS, and VPN and SSL.  To purchase this report, please contact Matt Dear at +1.650.622.9400 x233 or email


Dell’Oro Group is a market research firm that specializes in strategic competitive analysis in the telecommunications, networks, and data center IT markets.  Our firm provides in-depth quantitative data and qualitative analysis that enables business executives at equipment vendors, component manufacturers, service providers, investment firms and other leading organizations around the world, to make critical, fact-based business decisions.  We have earned the reputation of being the trusted source for market research.  For more information, contact Dell’Oro Group at +1.650.622.9400 or visit