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The NEC Kanagawa Data Center, a top-notch energy-saving facility supporting NEC’s cloud business

The NEC Kanagawa Data Center, a top-notch energy-saving facility supporting NEC’s cloud business

On January 27, 2014, the NEC Kanagawa Data Center (DC) was opened, becoming the largest of NEC's data centers. Utilizing NEC's unique technology and facial recognition system, the data center is able to provide highly efficient, safe and reliable services. It supports cloud business as the flagship DC and foundation of NEC's Solutions for Society business initiative.

One of the main characteristics of the NEC Kanagawa Data Center is its energy-saving performance. Conserving energy at data centers is key not only for coping with price increases in electrical power rates, but also from an environmental perspective in reducing CO2 emissions. The NEC Kanagawa Data Center now provides a new cloud-based service (NEC Cloud IaaS). In the STD model of this service, 700 servers can be stored in one rack. Special-purpose energy-saving and highly integrated servers are utilized that reduce both installation space and power consumption to one-fourth that of conventional models.

The NEC Kanagawa Data Center, a top-notch energy-saving facility supporting NEC’s cloud business

No matter what, when servers are this highly integrated, the heat emitted increases. In order to collect this heat, adopting the rack device that mounts cooling equipment with the “phase change cooling technology”*1 developed by NEC’s Central Research Laboratories can reduce the power consumption of air-conditioning per rack by 30% compared to conventional water-cooling methods. Furthermore, a new air-conditioning method where ceilings are dual structure and cold air is blown down from above was adopted. Compared to conventional cooling methods that blow cold air up from the floors, air-conditioning related costs can be cut by about 20%. This new system also has the advantage that space can be used more efficiently because the placement of the “tri-coil” (the outdoor unit in conventional air-conditioners) is moved from inside the data center to the ceiling.

Aside from IT devices including servers, other equipment also consumes power in data centers, including air-conditioning, power supply equipment, lighting, and so on. The PUE*2 is an indicator of the energy efficiency of data centers. Based on the independent development of specialized power-saving and highly integrated servers, server cooling equipment and the new method of air-conditioning, a PUE=1.26 (design value) was made possible for the NEC Kanagawa Data Center.

Certainly from an environmental perspective, and also from an economic perspective, making data centers more energy efficient has become an even more important factor. NEC is leading the way in energy-saving data centers through development of advanced energy-saving technologies and their active application, in our effort to contribute to realizing an information society friendly to humans and the earth.

  • *1:A cooling technology that does not require power based on the principle of heat being divested when a liquid changes to vapor.
  • *2:PUE (Power Usage Effectiveness): An indicator of the power efficiency of data. Calculated by dividing power consumption for the data center as a whole by the power consumption of ICT devices within the data center

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