Windows Server 2008 Hyper-V virtualisation doesn't offer an out of the box option to clone an existing Virtual Machine (VM) into a new one. However, this doesn't mean it is not possible or is very difficult. In fact, its quite easy and simple to clone a Virtual Machine in Hyper-V
Once Hyper-V Role is enabled on your Windows Server 2008, new Virtual Machines can be created from the Hyper-V Manager. The list of guest operating systems supported on Hyper-V at the moment are
Hyper-V is a 64-bit only Virtualization Technology in Windows Server 2008. Hyper-V is a 64-bit native hypervisor based Virtualization and requires processors that support virtualization. Needless to say it is not supported on the 32-bit version of Windows Server 2008.
Installing and enabling the Hyper-V role in Windows Server 2008 Core installation (64-bit) takes a few commands from the command-line. Click here for a step by step procedure to install and configure on a Windows Server 2008 Full installation. If you have installed your Windows Server 2008 from a recent media download or shipped by microsoft then chances are that you already have the Hyper-V Role installed on your system but not enabled yet.
If you have installed your Windows Server 2008 from a recent media download or shipped by microsoft then chances are that you already have the Hyper-V Role installed on your system but not enabled yet.