Data centers

Measurement Protocol for GEC, ERF, and CUE

Global leaders within the data center industry developed a consistent set of global metrics for measuring energy efficiency and greenhouse gas emissions. This protocol provides the agreed-on measurement protocols for PUE, Green Energy Coefficient (GEC), Energy Reuse Factor (ERF), and Carbon Usage Effectiveness (CUE). This document, dated October 2, 2012, also discusses agreements that have been reached to date.

Report to Congress on Server and Data Center Energy Efficiency Opportunities

In response to a 2007 Congressional request, EPA developed this 133-page report to assess current trends in energy use and energy costs of data centers and servers in the U.S., and to outline existing and emerging opportunities for improved energy efficiency. It provides particular information on the costs of data centers and servers to the federal government and opportunities for reducing those costs through improved efficiency.

Measurement Protocols for PUE and Updates on the Development of Other Metrics, February 28, 2011

This document includes the established protocols for measuring Power Usage Effectiveness (PUE) at data centers, based on global industry guidance. The document establishes a standard set of metrics, indices, and measurement protocols which aim to improve data center energy efficiency globally.

Top 12 Ways to Decrease the Energy Consumption of Your Data Center

Use this brochure to find the most effective ways you can reduce energy use in your data center. IT professionals, facility managers, energy managers, and sustainability coordinators can identify several opportunities to save energy, from virtualizing your servers to organizing your data to managing data center air flow. Print and share this brochure to your colleagues to help your organization reduce its energy consumption.

Best Practices Guide for Energy-Efficient Data Center Design

Use this guide to learn best practices for energy-efficient data center design. The guide covers the Information Technology (IT) systems and their environmental conditions, data center air management, cooling and electrical systems, on-site generation, and heat recovery. This guide was created by the U.S. Department of Energy in March 2011.

Data Center FAQs

Use this document to better understand EPA's 1-100 ENERGY STAR score for data centers and learn how to benchmark your data center in Portfolio Manager. It includes answers to common questions about the score, the Power Usage Effectiveness (PUE) metric, and energy measurement.

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