In VMWare ESXi, you can allot a session with 1GB of ram, and then allot another session with 1GB of ram and it doesn't use the resource unless it is needed. So when you view your resources, it doesn't show 2GB taken up, it will show what the sessions are current using. In Hyper-V, when you set a session to use the same setup listed above, it shows 2GB inuse. Is there anyway to setup Hyper-V Server the same way VMWare so it won't use the RAM unless it is needed? I have an 8GB server and I need 8 sessions of Windows 7. That means 1GB each for the Windows 7 sessions, plus 1GB for Hyper-V Server 2008. So the total would be 9GB, but the server is only 8GB. VMWare worked well because it would allow me to set them each 1GB, but it wouldn't use the resources unless the session needed it.