NDLI: Architecting Efficient Peak Power Shaving Using Batteries in Data Centers

Content Provider	IEEE Xplore Digital Library
Author	Aksanli, B. Pettis, E. Rosing, T.
Copyright Year	2013
Description	Author affiliation: Google Inc., Mountain View, CA, USA (Pettis, E.) \|\| Comput. Sci. & Eng. Dept, UC San Diego, La Jolla, CA, USA (Aksanli, B.; Rosing, T.)
Abstract	Peak power shaving allows data center providers to increase their computational capacity without exceeding a given power budget. Recent papers establish that machines may repurpose energy from uninterruptible power supplies (UPSs) to maintain power budgets during peak demand. Our paper demonstrates that existing studies overestimate cost savings by as much as 3.35x because they use simple battery reliability models, Boolean battery discharge and neglect the design and the cost of battery system communication in the state-of-the-art distributed UPS designs. We propose an architecture where batteries provide only a fraction of the data center power, exploiting nonlinear battery capacity properties to achieve longer battery life and longer peak shaving durations. This architecture demonstrates that a centralized UPS with partial discharge sufficiently reduces the cost so that double power conversion losses are not a limiting factor, thus contradicting the recent trends in warehouse-scale distributed UPS design. Our architecture increases battery lifetime by 78%, doubles the cost savings compared to the distributed design (corresponding to $75K/month savings for a 10MW data center) and significantly reduces the decision coordination latency by 4x relative to the state-of-the-art distributed designs.
Sponsorship	IEEE
Starting Page	242
Ending Page	253
File Size	457019
Page Count	12
File Format	PDF
ISBN	9780769551029
ISSN	15267539
DOI	10.1109/MASCOTS.2013.32
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-08-14
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Batteries Discharges (electric) Uninterruptible power systems Servers Power demand Power distribution US Department of Defense energy cost data center batteries peak power
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