|
(詳細はenergy demand within the Information Technology department in any organization. IT energy demand accounts for approximately 2% of global emissions, approximately the same level as aviation.〔Gartner Press Release April 26, 2007, Gartner Estimates ICT Industry Accounts for 2 Percent of Global CO2 Emissions http://www.gartner.com/it/page.jsp?id=503867〕 IT can account for 25% of a modern office building’s energy cost.〔Gartner Inc., “IT Vendors, Service Providers and Users Can lighten IT’s Environmental footpint” Simon Mingay, December 5, 2007〕 At one point, the main sources of manageable IT energy demand were PCs and Monitors, accounting for 39% of energy use, followed by data centers and servers, accounting for 23% of energy use.〔Steve Kleynhans, VP Computing, Gartner presentation “the Green PC Environment” - presentation, New York, November 2007〕 Significant opportunities exist for Enterprises to optimise their IT energy usage.〔E. Curry, B. Guyon, C. Sheridan, and B. Donnellan, (“Developing an Sustainable IT Capability: Lessons From Intel’s Journey,” ) MIS Quarterly Executive, vol. 11, no. 2, pp. 61–74, 2012.〕 Data centers can consume up to 100 times more energy than a standard office building. Often, less than 15% of original source energy is used for the information technology equipment within a data center. With the introduction of new technologies and products, energy management of several IT equipments has been greatly improved. ==Server and data center power management== Servers and data centers account for 23% of IT energy demand.〔 As hardware becomes smaller and less expensive, energy costs constitute a larger portion of server or data center costs. Specialist software products are now emerging to address this issue. These allow gains to be made through optimisation of servers. This is typically done by doing diagnostic tests on individual servers and developing a model for a data center’s energy demand using these measurements. By analysing every server in a data centre, server power management software can identify servers that can be removed. It also enables servers to be virtualized, processes to be consolidated to a smaller number of servers, and servers with a predictable cyclical power demand to be fully powered down when not in use. Active power management features are also included which put remaining servers into their lowest power state that allows instant wake-up on demand when required. Energy efficiency benchmarks, such as SPECpower, or specifications, like Average CPU power, can be used for comparing server efficiency and performance per watt. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「IT energy management」の詳細全文を読む スポンサード リンク
|