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Refaat Issa, Senior Program Manager on the Nano Server team shows you an example of scale with Nano Server on an 8 processor 1 TB machine running 1000 Nano Server VMs.
Be sure to tune into the Microsoft Ignite session where Jeffrey Snover will go into lots of detail on Nano Server and all its goodness.
Full details on the Windows Server blog: https://blogs.technet.com/b/windowsserver/archive/2015/04/08/microsoft-announces-nano-server-for-modern-apps-and-cloud.aspx