4,419 research outputs found
Power Management Techniques for Data Centers: A Survey
With growing use of internet and exponential growth in amount of data to be
stored and processed (known as 'big data'), the size of data centers has
greatly increased. This, however, has resulted in significant increase in the
power consumption of the data centers. For this reason, managing power
consumption of data centers has become essential. In this paper, we highlight
the need of achieving energy efficiency in data centers and survey several
recent architectural techniques designed for power management of data centers.
We also present a classification of these techniques based on their
characteristics. This paper aims to provide insights into the techniques for
improving energy efficiency of data centers and encourage the designers to
invent novel solutions for managing the large power dissipation of data
centers.Comment: Keywords: Data Centers, Power Management, Low-power Design, Energy
Efficiency, Green Computing, DVFS, Server Consolidatio
Toward sustainable data centers: a comprehensive energy management strategy
Data centers are major contributors to the emission of carbon dioxide to the atmosphere, and this contribution is expected to increase in the following years. This has encouraged the development of techniques to reduce the energy consumption and the environmental footprint of data centers. Whereas some of these techniques have succeeded to reduce the energy consumption of the hardware equipment of data centers (including IT, cooling, and power supply systems), we claim that sustainable data centers will be only possible if the problem is faced by means of a holistic approach that includes not only the aforementioned techniques but also intelligent and unifying solutions that enable a synergistic and energy-aware management of data centers.
In this paper, we propose a comprehensive strategy to reduce the carbon footprint of data centers that uses the energy as a driver of their management procedures. In addition, we present a holistic management architecture for sustainable data centers that implements the aforementioned strategy, and we propose design guidelines to accomplish each step of the proposed strategy, referring to related achievements and enumerating the main challenges that must be still solved.Peer ReviewedPostprint (author's final draft
SHIELD: Sustainable Hybrid Evolutionary Learning Framework for Carbon, Wastewater, and Energy-Aware Data Center Management
Today's cloud data centers are often distributed geographically to provide
robust data services. But these geo-distributed data centers (GDDCs) have a
significant associated environmental impact due to their increasing carbon
emissions and water usage, which needs to be curtailed. Moreover, the energy
costs of operating these data centers continue to rise. This paper proposes a
novel framework to co-optimize carbon emissions, water footprint, and energy
costs of GDDCs, using a hybrid workload management framework called SHIELD that
integrates machine learning guided local search with a decomposition-based
evolutionary algorithm. Our framework considers geographical factors and
time-based differences in power generation/use, costs, and environmental
impacts to intelligently manage workload distribution across GDDCs and data
center operation. Experimental results show that SHIELD can realize 34.4x
speedup and 2.1x improvement in Pareto Hypervolume while reducing the carbon
footprint by up to 3.7x, water footprint by up to 1.8x, energy costs by up to
1.3x, and a cumulative improvement across all objectives (carbon, water, cost)
of up to 4.8x compared to the state-of-the-art
Cities and climate change: Strategic options for philanthropic support
Now, more than ever, cities are at the front lines of U.S. climate action. As national action stalls,
there is still a daunting amount to be done in reducing human-generated climate emissions.
Fortunately, this report comes in the wake of a groundswell of initiatives to engage on climate
change by cities, countries, and states across the U.S. Several important and thorough reports
on the types of mitigation actions cities can take have recently been released. We already have
examples of cities taking significant leadership roles in reducing their own climate emissions,
from New York and Boston to Austin, Boulder, and Los Angeles - yet U.S. climate emissions
continue to rise, and cities have an outsized role to play.
The purpose of this project is to review current U.S. city climate activities in order to identify
areas where additional investment by foundations could help accelerate city action to reduce
urban greenhouse gas emissions. The focus of the inquiry is on aggressive actions cities can take
that significantly increase their “level of ambition” to achieve emissions reductions on an
accelerated timetable. City strategies on climate adaptation are not encompassed in this
project. [TRUNCATED
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