Effect of virtualization on the cooling infrastructure's power consumption in enclosed aisle data centers

Dustin W. Demetriou, H. Ezzat Khalifa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

Enclosed aisle data centers with bypass recirculation have previously been shown to reduce significantly the cooling infrastructure's power consumption compared to a typical open-aisle configuration. Enclosed aisle configurations also facilitate IT load placement through so-called thermally aware, energy-optimized virtualization. The formidable problem of optimal workload placement, which has received increased interest by the IT industry and has been the subject of numerous investigations, becomes much simpler, almost trivial, when the aisles are enclosed. This is because there is no preference among identical servers in an enclosed aisle based on the thermal environment, which will be uniform in this case, making for a wide range of equivalent load placement possibilities within the data center, or at least those racks in the data center that share enclosed cold aisles. However, the reduction in IT load can have a significant impact on the energy consumption of the cooling infrastructure due to the off-design operation of equipment. The work presented in this paper uses an experimentally validated thermo-hydraulic model of the data center's cooling infrastructure, previously developed by the authors, to explore optimization possibilities in air-cooled, enclosed aisle data centers. The model is used to evaluate the total energy consumption of the data center's cooling infrastructure for data centers operated at reduced IT load. The analysis highlights the importance of reducing the total power required for moving the air within the CRACs, the plenum, and the servers, rather than focusing primarily or exclusively on reducing the refrigeration system's power consumption and shows the benefits of bypass recirculation in enclosed aisle configurations. Energy efficient operating strategies for data centers with enclosed aisles are given for a range of IT loads and ambient conditions.

Original languageEnglish (US)
Title of host publicationProceedings of the 13th InterSociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems, ITherm 2012
Pages358-366
Number of pages9
DOIs
StatePublished - 2012
Event13th InterSociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems, ITherm 2012 - San Diego, CA, United States
Duration: May 30 2012Jun 1 2012

Publication series

NameInterSociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems, ITHERM
ISSN (Print)1936-3958

Other

Other13th InterSociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems, ITherm 2012
CountryUnited States
CitySan Diego, CA
Period5/30/126/1/12

Keywords

  • data center
  • enclosed aisle
  • energy optimization

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Effect of virtualization on the cooling infrastructure's power consumption in enclosed aisle data centers'. Together they form a unique fingerprint.

  • Cite this

    Demetriou, D. W., & Khalifa, H. E. (2012). Effect of virtualization on the cooling infrastructure's power consumption in enclosed aisle data centers. In Proceedings of the 13th InterSociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems, ITherm 2012 (pp. 358-366). [6231452] (InterSociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems, ITHERM). https://doi.org/10.1109/ITHERM.2012.6231452