This document discusses the need for organizations to optimize their data centers given economic pressures to do more with less resources. Many data centers are approaching capacity for power and cooling and struggle with capacity planning and disaster recovery. It also outlines various components of data center infrastructure that must be carefully managed like racks, switches, and HVAC systems to prevent overload conditions. Finally, it discusses how server virtualization enables disaster recovery across data centers by allowing instances to exist across locations, simplifying failover.