Using a VMware vSphere® Native Key Provider™ in your vSphere environment requires some preparation. After you configure vSphere Native Key Provider, you can create virtual Trusted Platform Modules (vTPMs) on your virtual machines.
After you set up your environment for vSphere Native Key Provider, you can use the vSphere Client and API to create vTPMs. If you purchase the VMware vSphere® Enterprise Plus Edition™, you can also encrypt virtual machines and virtual disks, and encrypt existing virtual machines and disks.