VMware Compute Resources

VMware compute resource is a combination of all ESXi compute resources at the vCenter displayed as a single combined compute resource with a sum of the CPU, RAM, and Disk resources rather than individual compute resources.

VMware compute resources behave differently from KVM: with KVM the control is made directly upon the compute resources, while with VMware OnApp directly controls the VMware vCenter. This allows vCenter to control the VSs with the full range of VMware functionality including DRS and vMotion to ensure that the operation is optimal. 

For details how to create a VMware compute resource, refer to the Create VMware Compute resource section of the vCenter Implementation Guide.