1. In a virtual data center having a first host and a second host, a graphics hardware resource usage method, comprising: receiving a request for graphics hardware features that are unavailable on the first host; generating a first request to a provisioning broker to migrate a virtual machine residing on the first host to the second host having the graphics hardware features; migrating the virtual machine and a client connection to the second host; generating a second request to the provisioning broker to find a suitable host to which the virtual machine can migrate; and migrating the virtual machine to the suitable host.