NDLI: Energy-efficient content delivery networks using cluster shutdown

Content Provider	IEEE Xplore Digital Library
Author	Mathew, V. Sitaraman, R.K. Shenoy, P.
Copyright Year	2013
Description	Author affiliation: Univ. of Massachusetts, Amherst, MA, USA (Mathew, V.; Sitaraman, R.K.; Shenoy, P.)
Abstract	Content delivery networks (CDNs) are an important class of Internet-scale distributed systems that deliver web, streaming, and application content to end users. A commercial CDN could comprise hundreds of thousands of servers deployed in over thousand clusters across the globe and incurs significant energy costs for powering and cooling their servers. Since energy costs are a significant component of the total operating expense of a CDN, we propose and explore a novel technique called cluster shutdown that turns off an entire cluster of servers of a CDN that is deployed within a data center. By doing so, cluster shutdown saves not just the power consumed by the servers but also the power needed for cooling those servers. We present an algorithm for cluster shutdown that is based on realistic power models for servers and cooling equipment and can be implemented as a part of the global load balancer of a CDN. We evaluate our technique using extensive real-world traces from a large commercial CDN to show that cluster shutdown can reduce the system-wide energy usage by 67%. Further, much of the energy savings are obtainable without sacrificing either bandwidth costs or end-user performance. In addition, 79% of the optimal savings are attainable even if each cluster is limited to at most one shutdown per day, reducing the required operational overhead. Finally, we argue that cluster shutdown has intrinsic architectural advantages over the well-studied server shutdown techniques in the CDN context, and show that it saves more energy than server shutdown in a wide range of operating regimes.
Starting Page	1
Ending Page	10
File Size	864875
Page Count	10
File Format	PDF
ISBN	9781479906239
DOI	10.1109/IGCC.2013.6604510
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-27
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cooling Clustering algorithms Load management Servers Mathematical model Equations Load modeling
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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