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Special Hardware and Virtualization: Two Paths to SDN

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Another article by Patrick Moorhead piqued my interest today.  It asks a question about whether network complexity is better solved by virtualization, or a change in hardware.  Obviously, a lot of vendors will push their hardware as the best way to achieve software-defined networking, as opposed to the more free and open virtualization strategies involving standards like OpenFlow.  But I think this in-depth paper, and Moorhead's opinions both point toward network virtualization, unless you already have a variety of specialized hardware.

Network Virtualization Versus Next Generation Servers: Who Wins?

The article also has a neat diagram of commodity rack servers, blades, and hyperscale servers.