I am planing to have 2xESX servers with SAN ant VirtualCenter to manage my infrastructure. Also planing to use VCB with CA ARCserve® Backup agent for vmware. I need help about CA agent for vmware. How i understand i need one ca agent license on VCB server. If I use CA arcserver with virtualcenter i dont need CA ARCserve® Backup agent for vmware for each ESX server?