Fast and easy way
You can have a private cloud up and running in days, not in weeks or months. You can use your existing infrastructure or build a new environment.
OpenStack is not a hypervisor, but it supports several hypervisors through an abstraction layer. The software supports popular commercial and open source hypervisors including vSphere ESXi as well as KVM, Xen, QEMU and Hyper-V.
CloudOval is used as the control plane to manage a multi-hypervisor cloud, running both vSphere and KVM or other. This approach provides common, self-service provisioning and API access. It consolidates cloud management while allowing applications to be hosted on the environment best suited for them. For example, users can run a three-tier legacy application using a database backend such as Oracle on vSphere, and web-scale applications, such as MongoDB on KVM.