NDLI: The Plenum concept: Improving scalability, security, and efficiency for data centers

Content Provider	IEEE Xplore Digital Library
Author	Hackenberg, D.
Copyright Year	2014
Description	Author affiliation: Center for Inf. Services & High Performance Comput., Tech. Univ. Dresden, Dresden, Germany (Hackenberg, D.)
Abstract	Data centers are very costly structures, both in terms of capital and operational expenditures. The high innovation rate in the IT business conflicts with the long-term character of data centers. In order to ensure lifetime usability, flexibility is a major concern for any data center design. Recent developments of data center air-cooling, in particular containment solutions for hot/cold air separation, allow rethinking of traditional data center design approaches. In this paper we present the Plenum concept that represents a major overhaul of traditional design principles. Our approach requires the construction of a full additional building story instead of a traditional raised floor. We then position the computer room air-handling (CRAH) units directly below the hot aisle of a block of racks. The down- ward flow direction of hot air makes the strict use of hot/cold air separation mandatory. Our approach minimizes or eliminates support space on the IT floor, moves almost all support structures into the Plenum, and creates very clean interfaces between both spaces. This greatly reduces the need for support personnel on the IT floor. Vice versa, IT personnel does not need to access support spaces, allowing for simplified data center operations. Insight from the planning process of a 5 MW data center currently under construction at TU Dresden shows that the construction of a full building story below the IT floor instead of a traditional raised floor does not necessarily increase the building volume. The simplified access and the separation of IT and support personnel reduces corridor and access spaces. We show that the overall building volume can even be decreased in comparison to classical approaches. Our design easily supports more than 15 kW average heat loads per rack with n+1 CRAH unit redundancy at a highly efficient CRAH operating point and with little scalability limitations regarding computer room size.
Starting Page	1137
Ending Page	1144
File Size	1517545
Page Count	8
File Format	PDF
ISBN	9781479952670
ISSN	10879870
DOI	10.1109/ITHERM.2014.6892408
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-05-27
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Floors Cooling Servers Computers Temperature distribution Personnel plenum data center air cooling raised floor
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

Air Flow Measurement and Management for Improving Cooling and Energy Efficiency in Raised-Floor Data Centers: A Survey

Effect of Supply Air Temperature on Rack Cooling in a High Density Raised Floor Data Center Facility

Techniques for Controlling Airflow Distribution in Raised-Floor Data Centers

Control strategies for plenum optimization in raised floor data centers (2006).

Modeling perforated tiles in data centers – What is required?

The impact of air flow leakage on server inlet air temperature in a raised floor data center

Dynamics of cold aisle air distribution in a raised floor data center

Reducing energy usage in data centers through control of Room Air Conditioning units

Impact of ASHRAE environmental classes on data centers

The Plenum concept: Improving scalability, security, and efficiency for data centers

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