http://www.vmware.com/support/licensing/per-vm/ As IT continues to virtualize and move towards IT-as-a-Service, software licensing needs to evolve to account for actual product consumption rather than arbitrarily licensing the physical hardware from which consumption is abstracted. With virtual machines now being the new unit of consumption, IT organizations need flexible deployment and licensing options that are more usage-based versus server-based. Since September 1, 2010, VMware has begun offering some Infrastructure, Management, and Application Platform products using per VM licensing. Moving to Per VM Licensing vCenter CapacityIQ vCenter Chargeback vCenter Site Recovery Manager vCenter Operations vCloud Director vFabric 5 How Per VM Licensing Works Per VM licensing is more flexible. Rather than requiring licenses for every server deployed, you only need licenses for the average maximum number of virtual machines that are managed. Let’s look at an example: Per VM licensin
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