期刊名称：International Journal of Sustainable Engineering
印刷版ISSN：1939-7038
出版年度：2021
卷号：14
期号：3
页码：190-201
DOI：10.1080/19397038.2020.1862342
语种：English
出版社：Taylor & Francis Group
摘要：ABSTRACTThe lifetime and complexity of some IT scenarios significantly exceed the typical lifetime and complexity of a technological system. This is a source of significant economic efficiency improvement. In this paper, we propose an approach that enables us to leverage costs, reduce the space floor requirements, and lower CO2 emissions incurred by the infrastructure. By re-investing a significantly smaller financial amount compared to the initial investment an IT infrastructure with the same or better performance and with significantly higher energy efficiency can be purchased. By using a mathematical model, we can quantify the benefits of the approach based on technological advancement, electrical energy prices, and prices of data centre construction. We compare two strategies: the frozen strategy relying on a fixed IT infrastructure during the entire IT system lifecycle and the migration strategy leveraging technological advancement.
关键词：KEYWORDSLong-term missionsit infrastructureit systems cost driverscost savingstechnology advancementvirtualisation
