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Paper Abstract and Keywords
Presentation 2015-03-03 12:40
Energy-Efficient Air Conditioning with Server Workload Placement Optimization
Kazuaki Chikira, Hideaki Hashimoto, Joji Urata, Tsuyoshi Masuo (NTT)
Abstract (in Japanese) (See Japanese page) 
(in English) We have constructed a system that optimizes computer room air conditioner (CRAC) temperature setting and server workload placement by coordinating them with a virtualization product. The system was implemented in our machine room and resulted in an approximately 30% reduction in CRAC power consumption. However, in practical operation environments, the system will not always achieve the maximum effect because of restrictions on workload placement and different patterns of server resource usage. This paper reports what effects the restriction of workload placement and server resource usage had on reducing the energy consumption of CRACs.
Keyword (in Japanese) (See Japanese page) 
(in English) data center / energy saving / air conditioning / workload placement / optimum control / / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 477, NS2014-240, pp. 367-371, March 2015.
Paper # NS2014-240 
Date of Issue 2015-02-23 (NS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380

Conference Information
Committee NS IN  
Conference Date 2015-03-02 - 2015-03-03 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa Convention Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General 
Paper Information
Registration To NS 
Conference Code 2015-03-NS-IN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Energy-Efficient Air Conditioning with Server Workload Placement Optimization 
Sub Title (in English)  
Keyword(1) data center  
Keyword(2) energy saving  
Keyword(3) air conditioning  
Keyword(4) workload placement  
Keyword(5) optimum control  
1st Author's Name Kazuaki Chikira  
1st Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
2nd Author's Name Hideaki Hashimoto  
2nd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
3rd Author's Name Joji Urata  
3rd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
4th Author's Name Tsuyoshi Masuo  
4th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
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Date Time 2015-03-03 12:40:00 
Presentation Time 20 
Registration for NS 
Paper # IEICE-NS2014-240 
Volume (vol) IEICE-114 
Number (no) no.477 
Page pp.367-371 
#Pages IEICE-5 
Date of Issue IEICE-NS-2015-02-23 

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