Quoting from the SunGuard official announcement:
SunGard Availability Services today announced it is now offering support of VMware®ESX Server 3.x and the distributed services that are part of VMware Infrastructure through its Operating System (OS) Management Service. With this enhancement, SunGard now provides full management of customers’ systems running in a virtualized environment on the VMware Infrastructure platform-a key milestone in the company’s ongoing virtualization initiative. The service includes a VMware VirtualCenter management server to monitor and manage a customer’s virtual machines, as well as complete monitoring, management and reporting of the physical servers.
The enhanced Operating System Management Service featuring support of VMware ESX Server and the distributed virtualization services that are part of VMware Infrastructure is available today.