DPC of Yahoo!

The city of Lokport located near Niagara Falls (piece New York) became the place for construction of a superefficient data processing center of Yahoo. Its essentially new engineering solutions allow to reduce the cost of the consumed electric power by 40%.^[1]

Cooling is performed almost completely at the expense of external air which passes through all machine halls, providing normal temperature for operation of servers. It means that here the chillers supplying with a cold water conditioners are not necessary. Thus equipment installation to which share a considerable part of energy costs of normal data processing centers falls is excluded.

Power supply of the IT equipment is made due to the energy developed by local hydroelectric power station. Yahoo claims that it is the ecologically safest DPC which was ever constructed.

Its central operational premises are adjoined by three halls with the IT equipment. They are located taking into account a wind rose and have the extended form that it is the most effective to use the cooling impact of wind.

On construction of this center the Yahoo company received a grant of the U.S. Department of Energy in the amount of 9.9 million dollars.

Thus the government to a stim lirut implementing solutions, reducing energy consumption in data processing centers. It purchases the increasing value as the share of DPC in cumulative energy consumption in the USA steadily grows though four years ago it made only 1.5%.

According to data of Yahoo, the effectiveness ratio of energy consumption (Power Usage Effectiveness, PUE) the new center is 1.08 while the average value is equal to 1.9. The indicator of PUE is defined as the relation of the total energy given to DPC to its part consumed by the IT equipment. The coefficient of PUE equal 2.0, means that for a power supply of the computing equipment a half of all consumed energy, and 1.0 — all energy is used.

The total area of the center will be more than 3340 sq.m, it is enough for placement of 50 thousand servers. After commissioning of additional premises it will be possible to place up to 100 thousand servers here.

The DPC will support such services Yahoo as Mail, Messenger and Flickr.

Christina Page, the director of Yahoo concerning strategy in power and climate, emphasized that construction of a new data processing center will cost cheaper, than the traditional centers: "The ordinary opinion that the environmentally friendly enterprises are more expensive is not always true".

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