Premium Content

Access "Data centre cases where PUE or power usage effectiveness doesn't work"

Published: 26 Nov 2012

Power Usage Effectiveness, or PUE, is the phrase du jour for measuring just how effective and energy efficient an organisation’s data centre is. But, PUE remains a pretty crude measurement in many data centre instances and data centre managers must look at effective PUE or ePUE. At its simplest level, PUE is a direct relationship between how much energy is used across the whole of a data centre divided by how much energy is used to power the IT equipment. The basic equation can be shown as such: PUE = Total energy             IT energy Therefore, energy used in powering cooling systems, uninterruptable power supplies (UPSes), lighting and so on causes the PUE to be a higher number. Theoretical perfection is a PUE of 1, where all power is put into the IT equipment, with none being put into the support environment. The majority of existing data centres are running at PUEs of around 2.4, with large, multi-tenanted systems running at around 1.8 or less. Many different approaches have been brought to the fore to enhance PUE. These include using free air cooling, ... Access >>>

Access TechTarget
Premium Content for Free.

By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

What's Inside

Features

More Premium Content Accessible For Free

  • CW buyer’s guide to business process automation
    CWE_BG_June_2014_BPA.jpg
    E-Handbook

    Computer Weekly looks at how to facilitate and manage the growing role of workload automation in the enterprise in this 10-page buyer’s guide.

  • CW Special Report on IBM
    CW Special Report on IBM.jpg
    E-Handbook

    This special 12-page report from Computer Weekly analyses the challenges facing IBM, its financial performance, the services it offers, its place in ...

  • Research snapshot – BYOD in the UK
    BYOD-in-the-UK.jpg
    E-Handbook

    BYOD is fast becoming a normal part of daily business life in the UK, this snapshot survey of 100 UK businesses by Vanson Bourne reveals.