Data Center Types & Markets The CoE conducts research on, and develops resources targeted towards a number of key data center markets. Small Data Centers Small data centers house more than half of all servers across the United States, but face barriers to achieving energy savings that larger data centers do not. They often lack the resources to assess, identify, and implement energy efficiency strategies. Federal Data Centers Federal agencies are subject to Data Center Optimization Initiative (DCOI) requirements to develop and report on data center strategies to consolidate inefficient infrastructure and optimize existing facilities. High Performance Computing (HPC) High performance computing (HPC) data centers are a fast growing segment of the data center market. HPC data centers can accommodate high density applications, and often consume a significant amount of energy.