Microsoft Exchange Performance Counters

Microsoft Exchange Virtualization HyperV counters

Counter Name	Description
Hyper-V Virtual Machine Health Summary\Health Critical	Shows the percentage of processor time spent in guest code. This is used to measure the total processor utilization for all virtual machines (VMs) running on the host server. This value is equal to the sum of the Hyper-V Hypervisor Root Virtual Processor\% Guest Run Time and Hyper-V Hypervisor Virtual Processor\% Guest Run Time counters.
Hyper-V Virtual Machine Health Summary\Health OK	Shows that the host server is running as expected.