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Nov 15 2018

Fujitsu’s Liquid Immersion Cooling System Receives Environmental Award

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Yoshiaki Harada, Japan's Minister of the Environment, has accorded Fujitsu a 2018 Award for Global Warming Prevention Activity (Technology Development and Commercialization) for its FUJITSU Server PRIMERGY Liquid Immersion Cooling System, which provides data centers with a revolutionary method to significantly cut their energy consumption.

First introduced in 1998, the award honors organizations and individuals for outstanding achievements that mitigate the impact of global warming, as a key part of the ministry's efforts to promote global warming countermeasures. This year, the jury recognized the contribution of Fujitsu's Liquid Immersion Cooling System to the overall reduction of server system power consumption as well as to strictly limiting data centers' CO2 emissions.

A prototype of the Liquid Immersion Cooling System originally debuted in summer 2016 as a result of Fujitsu's extensive experience in developing and marketing liquid cooling solutions, which began with the M-780 system developed for Amdahl mainframes in 1985. This prototype quickly became a regular at customer-facing events such as the Fujitsu Forum 2017, where it attracted quite a crowd. At the same time, our engineers subjected the system to a steady improvement process until it reached maturity. The Liquid Immersion Cooling System was finally launched on September 6, 2018 to widespread acclaim; and the ministry's award now marks a provisional peak.

Technically, the marketable product adheres as closely to the original concept as possible: Fujitsu servers like the PRIMERGY CX2560 are immersed entirely into a "bath" – i.e., a sealed tank filled with a liquid coolant – so that the heat dissipates within the fluid, which circulates in a closed loop where it is cooled and then brought back again for further use. The coolant itself is an electrically insulated liquid that flows through a pipe system to a heat exchanger to facilitate the cooling process. This setup allows for significant energy savings because the heat generated by the servers is no longer dispersed into a tightly packed room, which in turn not only renders air conditioning unnecessary, but also eliminates the need to build cooling fans into the servers themselves. That way, LIC can reduce the overall power consumption of a server (with individual cooling equipment included) by up to 40% when compared to air-cooled systems, triggering a reduction in CO2 emissions in the process. Moreover, the system can help to increase server installation density by up to 100% in terms of installation space (meaning customers can fit up to twice as many servers into their existing data centers as before), thus contributing to a reduced TCO.

This marks the second year in a row that Fujitsu has received the Environment Minister's Award for Global Warming Prevention Activity, and the sixth time overall. Going forward, Fujitsu will continue to contribute to mitigating the effects of climate change and digital transformation on its customers by providing highly energy-efficient products and services.

The FUJITSU Server PRIMERGY Liquid Immersion Cooling System will ship in Japan at the end of this month, for a suggested retail price of ¥20 million ($176,000/€155,000); this price does not include other necessary equipment, such as the servers that require cooling. Please refer to our September press release for detailed product information.

 
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