Белая книга для Cisco Cisco UCS C250 M1 Extended-Memory Rack-Mount Server

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IT & DATA MANAGEMENT RESEARCH,

INDUSTRY ANALYSIS & CONSULTING

Data Center Management: The Key Ingredient for Reducing Server Power while Increasing Data Center Capacity

According to the U.S. Environmental Protection Agency (EPA), electricity consumed by servers in

U.S. data centers in 2006 represented about 1.5% of national electricity use, or around 61 billion

kilowatt-hours (kWh)—equivalent to approximately 5.8 million average U.S. households

and result-

ing in energy costs of approximately $5.4 billion while emitting 36 million tons of carbon dioxide

into the atmosphere.

Power consumption has emerged as a primary focus of many organizations that have undertaken

“Green IT” initiatives. While reducing an organization’s contributions to greenhouse gas emissions

is compelling and necessary from a corporate responsibility standpoint, an even larger impact on the

bottom line is created when a data center runs out of power. While every watt is important, the “last

watt +1,” which occurs when a data center runs out of power capacity and necessitates the build-out

or relocation of the data center, costs tens or hundreds of millions of dollars. This scenario creates a

massive stepping function and executive review, requiring data center managers to show that they have

squeezed every watt out of the company’s existing data center investment. Data center scalability has

therefore emerged as a key driver in the “greening” of the data center. Organizations are discovering

that data centers designed to provide the highest level of performance per square meter at the lowest

power levels, can derive up to 30% additional capacity from existing facilities. They also reap the PR

and cost reduction benefits of a green data center in the process. Proactive planning today can elimi-

nate or delay the necessity of expanding or relocating the data centers of tomorrow, saving millions of

dollars in the process.

“Increasing power density can lead to a situation in which companies are forced to build new data centers not because

they are running out of floor space but because they need power and cooling beyond what can be provided in their

existing data centers. This situation has driven much of the recent interest in energy-efficiency improvements for data

centers. If the power consumed (and resulting heat generated) in data centers can be reduced through energy-efficiency

measures, the existing infrastructure can continue to meet cooling and power needs, and costly investments in new

data centers can be deferred.”
Report to Congress on Server and Data Center Energy Efficiency—Public Law 109-431, United

States Environmental Protection Agency ENERGY STAR PROGRAM, August 2, 2007

There are two fundamental ways to reduce data center power requirements: 1) purchase energy efficient

equipment; and/or 2) employ “power-friendly” IT management technologies. The latter can reduce

power consumption on a much larger scale than simple hardware replacements. This is true only if the

data center management stack is not so complex that it causes management overhead to spiral out of

control, increasing expenditures more (and faster) than the power savings realized.

The Automated, Adaptive Data Center

Vendors created great hyperbole over the past decade, hailing the advent of a fully automated, adap-

tive, on-demand data center. In this brave new world, data center elements are grouped into generic

resource pools while an all-knowing, all-seeing management genie, sometimes known as an orchestra-

tor, manages the entire data center based on business policies. The “orchestrator” ensures that all loads

are matched with the appropriate amount of with resources, delivering maximum ROI and business

performance at the lowest cost.

“Report to Congress on Server and Data Center Energy Efficiency—Public Law 109-431”, United States Environmental

Protection Agency ENERGY STAR PROGRAM, August 2, 2007

UK National Energy Foundation Energy to Carbon Converter: