RightScale supports the image formats of any public or private cloud. If a supported public or private cloud (such as Vmware) supports importing an OVA/OVF format it will be supported in RightScale. RightScale then abstracts those images with a Multi-Cloud Image configuration. https://support.rightscale.com/09-Clouds/CloudStack/Upload_RightImages_to_a_CloudStack_Private_Cloud/