Data Centers consume 1-1.5 percent of energy today worldwide. It is predicted that by 2030, it will grow up to 3-13%. As energy consumption rises, so do the costs. To prevent unnecessary expenses, proper environmental monitoring best practices should be applied. ASHRAE have developed guidelines for the data center that include strategies for the best practices that reduce energy consumption. The different data industry segments have worked together on energy reduction approaches. These led to practical, technically attainable, and cohesive energy efficiency solutions. It then became the basis for the development of future codes and standards.