Making large-scale changes to data center operations to improve energy usage efficiency can be a complex, expensive, and time-consuming venture. But change doesn't have to be extreme to be effective, nor does it need to happen all at once. By using the following 16 methods, data centers can quickly start effectively reducing their energy consumption without significantly impacting their bottom line.

1. Reduce reliance on cooling

On average, most of the electricity used in a data center is used to run cooling and air conditioning systems to keep servers at the proper temperature and prevent overheating. Improving ventilation systems, strategically placing equipment, properly isolating server rooms, and creating streamlined airflow can increase cooling efficiency.

2. Test temperature

Because keeping server rooms, and their equipment, cool enough for servers to run, many managers don't consider trying to find a temperature that might be more efficient for their data centers. However, the truth is that lowering the maintenance temperature by even a few degrees can reduce power consumption and save hundreds if not thousands of dollars. Take the time to calculate your data center cooling needs, then experiment with different temperatures to find the best solution for your needs.

3. The server adopts hot aisle/cold aisle layout

Some data centers line up servers and other equipment in aisles, all facing the same direction. If this is the case, consider reorienting the machine so that the servers in the aisle face each other and the backs of the servers face each other. This arrangement will create hot and cold aisles and reduce the mixing of hot and cold air, increasing temperature efficiency within the server room.

4. Enclose or accommodate server racks

Containing or enclosing server racks is another way to prevent the mixing of warm and cold air in a data center, which helps reduce the need for powerful cooling technologies to keep the environment at the proper temperature.

5. Utilize general airflow improvement methods

Data center operators should investigate and consider general improvements in temperature and airflow. For example, by installing specialized cooling panels to reduce the temperature of the server inlet air while increasing the temperature of the air returning to the computer room air conditioner. This helps to significantly increase the operating efficiency of the equipment while reducing the need for dedicated electricity for climate control.

6. Invest in retrofitting air conditioning equipment with variable-speed fan drives

A retrofit kit specifically for CRACs is available, usually with a two-year payback guarantee. It allows the fan speed of the air conditioner to be adjusted to accommodate the changing cooling load of the data center.

7. Install air side economizer

One of the most practical ways to help keep servers cool is to bring outside cooling air into the building. Airside economizers can take advantage of cooler nighttime and winter air temperatures, saving up to 60% in cooling power and costs.

8. Adjust the humidity in the data center

Much like temperature, humidity is another critical factor that must be carefully maintained within a data center. Carefully experiment with humidity levels in your data center to find the optimum level for your servers, which can help save on day-to-day energy consumption.