Reducing energy consumption of data centers using optical wireless links

Etai Rosenkrantz, Shlomi Arnon

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations

Abstract

Data Center (DC) servers consume a huge amount of energy. However, a part of this energy (cooling and information technology devices) can be saved by shutting down racks containing idle servers. This can be achieved by rerouting workloads from partially loaded racks, and thus allowing additional racks to switch into idle mode. Workload rerouting requires additional wired links or by optical wireless communication (OWC) links, which can be deployed on top the existing network. In comparison to classic wired infrastructure, OWC deployment and maintenance is faster and simpler, and it offers dynamic configuration of the network. Moreover, OWC can be used to augment the performance of virtualization techniques, which allow load balancing. In this paper we developed a mathematical model and an optimization algorithm along with numerical simulations, which evaluate the energy consumption in DCs. Results show that for a uniform distributed load between 24-100% and a 100% deployment of OWC links, 33% of the IT and cooling energy consumed can be saved.

Original languageEnglish
Title of host publicationProceedings - WiSEE 2016
Subtitle of host publication2016 IEEE International Conference on Wireless for Space and Extreme Environments
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages68-72
Number of pages5
ISBN (Electronic)9781509026098
DOIs
StatePublished - 1 Jan 2016
Event2016 IEEE International Conference on Wireless for Space and Extreme Environments, WiSEE 2016 - Aachen, Germany
Duration: 26 Sep 201628 Sep 2016

Publication series

NameProceedings - WiSEE 2016: 2016 IEEE International Conference on Wireless for Space and Extreme Environments

Conference

Conference2016 IEEE International Conference on Wireless for Space and Extreme Environments, WiSEE 2016
Country/TerritoryGermany
CityAachen
Period26/09/1628/09/16

Keywords

  • Energy consumption
  • Optical wireless communication
  • Optimization

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