Selecting the Windows Server 2016 Edition

You administer nine virtual file servers on a single HyperV physical host that contains two 8core processors. Currently, each server is running Windows Server 2012 Standard edition on one host. You are thinking of migrating these servers to Windows Server 2016. Over a threeday period, you discover the following load for the virtual file servers:

	Avg Proc	95% CPU utilization
Server 1	25	5%
Server 2	25	3%
Server 3	35	6%
Server 4	15	5%
Server 5	15	3%
Server 6	10	6%
Server 7	25	5%
Server 8	20	3%
Server 9	30	6%

Which type of license should be purchased? Why purchase this license if you upgrade these servers to Windows Server 2016?