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TOP STORIES
Education, Technology Key Drivers in Energy Efficiency Push: PanelA panel debating energy management said technology in place now could save businesses as much as 30 percent on their power costs. READ MORE >> The Speed of Business TodayAgility is something that requires planning and a full incorporation in business and management processes—including data center design and maintenance. DOE Launches New Energy Efficiency Training for Data Center ManagersThe U.S. Department of Energy is developing several training certificate programs for data center managers that will focus on energy efficiency. DOE Opens Spigot On Smart Grid ProjectsThe Department of Energy is ready to spend $3.9 billion on efforts to modernize the U.S. electric grid. 
Preventing Data Corruption in the Event of an Extended Power OutageDespite advances in computer technology, power outages continue to be a major cause of PC and server downtime. Protecting computer systems with Uninterruptible Power Supply (UPS) hardware is part of a total solution, but power management software is also necessary to prevent data corruption after extended power outages.
Reliability Analysis of the APC InfraStruXure Power SystemThe APC InfraStruXure product line offers an alternative architecture to the central UPS. MTechnology, Inc. used the techniques of Probabilistic Risk Assessment (PRA) to evaluate the reliability of the 40 kW InfraStruXure UPS and PDU with static bypass. This paper summarizes the key findings of MTechnology's quantitative risk assessment and discusses their implications for facility managers and designers.
Guidelines for Specification of Data Center Criticality / Tier LevelsA framework for benchmarking a future data center's operational performance is essential for effective planning and decision making. This paper analyzes and compares existing tier methods, describes how to choose a criticality level, and proposes a defensible data center criticality specification. Maintaining a data center's criticality is also discussed.
Leading Consulting Engineers Discuss Power Factor, Real Power, and UPS OverloadThe purpose of this paper is to document expert opinions from leading consulting engineers regarding various power trends that are occurring in the IT industry.
Electrical Efficiency Measurement for Data CentersData center electrical efficiency is rarely planned or managed. Today it is both possible and prudent to plan, measure, and improve data center efficiency. This paper explains how data center efficiency can be measured, evaluated, and modeled, including a comparison of the benefits of periodic assessment vs. continuous monitoring.
Selecting an Industry-Standard Metric for Data Center EfficiencyThe development of standards for the measurement and specification of data center efficiency is an essential step in the global effort to reduce the environmental impact of data centers. This paper explains some of the metrics that have been used to describe the efficiency of data center physical infrastructure and suggests which metric is the most effective.
Calculating Total Power Requirements for Data CentersPart of data center planning and design is to align the power and cooling requirements for the IT equipment with the capacity of infrastructure equipment to provide it. This paper presents methods for calculating power and cooling requirements and provides guidelines for determining the total electrical power capacity needed to support the data center, including IT equipment, cooling equipment, lighting and power backup.
Guidelines for Specification of Data Center Power DensityConventional methods for specifying data center density are ambiguous and misleading. Describing data center density using Watts / ft2 or Watts / m2 is not sufficient to determine power or cooling compatibility with high density computing loads like blade servers. Historically there is no clear standard way of specifying data centers to achieve predictable behavior with high density loads. An appropriate specification for data center density should assure compatibility with anticipated high density loads, provide unambiguous instruction for design and installation of power and cooling equipment, prevent over-sizing, and maximize electrical efficiency. This paper describes the science and practical application of an improved method for the specification of power and cooling infrastructure for data centers. Electrical Efficiency Measurement for Data CentersData center electrical efficiency is rarely planned or managed. The unfortunate result is that most data centers waste substantial amounts of electricity. Today it is both possible and prudent to plan, measure, and improve data center efficiency. In addition to reducing electrical consumption, efficiency improvements can gain users higher IT power densities and the ability to install more IT equipment in a given installation. This paper explains how data center efficiency can be measured, evaluated, and modeled, including a comparison of the benefits of periodic assessment vs. continuous monitoring.
Management Strategy for Network Critical Physical InfrastructureWhen choosing a management solution for the physical infrastructure of IT networks, management of individual devices is necessary in order to have visibility to the many data points required for the reliable operation of network-critical physical infrastructure (NCPI). Element management solutions offer the optimum approach as they manage a particular type of device and have the ability to assimilate and, more importantly, make manageable the large volume of data necessary for network availability. Electrical Efficiency Modeling for Data CentersConventional models for estimating electrical efficiency of data centers are grossly inaccurate for real- world installations. Estimates of electrical losses are typically made by summing the inefficiencies of various electrical devices, such as power and cooling equipment. This paper shows that the values commonly used for estimating equipment inefficiency are quite inaccurate. A simple, more accurate efficiency model is described that provides a rational basis to identify and quantify waste in power and cooling equipment.
Cooling Strategies for Ultra-High Density Racks and Blade ServersRack power of 10 kW per rack or more can result from the deployment of high density information technology equipment such as blade servers. This creates difficult cooling challenges in a data center environment where the industry average rack power consumption is under 2 kW. Five strategies for deploying ultra-high power racks are described, covering practical solutions for both new and existing data centers. Data Center Efficiency CalculatorLearn how efficient your data center is. Use this tool to learn the impact of alternative power and cooling approaches on energy costs. The results will show you your data center infrastructure efficiency (DCiE).
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