Based in New Hampshire, Dartmouth-Hitchcock Medical Center (DHMC) began using server virtualization three years ago to curb server proliferation and rising electrical costs. The hospital and teaching facility initially used Microsoft Virtual Server 2005 R2 to trim 75 servers but wanted to move even more applications to virtual machines. DHMC decided to move its virtualization infrastructure to the Windows Server 2008 operating system with Hyper-V technology, using Microsoft System Center Virtual Machine Manager 2008 to manage its server landscape. DHMC expects to reduce total server holdings by 75 percent and save U.S.$4,300 per server in hardware, maintenance, electrical, and real-estate costs. It can now virtualize its most demanding applications and expects to improve service levels, save 30 hours each month in server management, and create a more dynamic IT environment.