By cutting the number of servers it uses, Nissan North America has realized an energy-consumption decrease of 34% for that function at its plants in Smyrna and Decherd, TN. The number of servers was cut from 159 to 28. The company used Microsoft's Hyper-V software that allows multiple virtual machines to operate on a single physical machine. The virtualization technology helped to create a smaller and less complex system at the two plants in less than 12 months. Nissan cites, as additional benefits of the server consolidation, increased reliability, reduced expenses for running the system, efficient setup for redundancy, improved manageability, and compatibility with new systems.