Installing Hyper-V 31 For best results, Hyper-V requires a minimum of two physical network adapters: one for hypervisor management and one for VM to network con- nectivity. If you plan to cluster your devices, install a third adapter. Software requirements for Hyper-V Hyper-V is installed as a role. (A role is a predefined function for a server, such as DNS, Active Directory Controller, or Hyper-V.) Before you can install the Hyper-V role, you must install the Hyper-V update packages for Windows Server 2008 (KB950050), as well as the Language Pack for Hyper-V (KB951636). Hyper-V v2 comes preinstalled in Server 2008 R2; you simply have to enable it. Note In addition to the patches already listed, install the Update for Windows Server 2008 (KB952627) on the Vista workstation if you plan to remotely administer the Hyper-V server from a workstation with Windows Vista SP1. SUPPORTED GUESTS ON HYPER-V You can install both 32-bit and 64-bit guest operating systems on Hyper-V. While many Operating Systems may install on a virtual machine instance,