TOWARDS AN INTEGRATED APPROACH FOR RESOURCE-EFFICIENCY IN SERVER ROOMS AND DATA CENTERS

This paper conceptualizes a hybrid package of products and services which ensures the energy efficient planning, realization and operation of IT infrastructure. It follows the well-established procedure model of product-service systems engineering and pursues a qualitative research approach that is based on two industry workshops with more than 60 participants from science and practice and on semi-structured interviews with 8 experts. Based on the findings from the interviews and the workshops, customer requirements to the hybrid package are described, a product model is developed and evaluated. Finally, an application scenario is derived

Challenges, Patterns and Sustainability Indicators for Cloud Computing / Desafios, padrões e indicadores de sustentabilidade para computação em nuvem

Cloud computing has reshaped the way companies use computing. The delivery of everything as a service, which is the basis of this technology, allows the use of software, platforms, infrastructures, databases, etc. via remote connection. Due to its applicability, many organizations consider deploying their private cloud infrastructures to avoid relying on service providers. However, countless factors interfere negatively in this process, especially when we consider questions related to sustainability. This article presents the main challenges and concerns faced by companies that aim to migrate to cloud computing. A series of standards and indicators are listed which can serve as a basis for companies to achieve/contribute to environmental sustainability. The data presented is the result of an extension of a systematic literature review and much research on the mentioned topic

Topics in Power Usage in Network Services

The rapid advance of computing technology has created a world powered by millions of computers. Often these computers are idly consuming energy unnecessarily in spite of all the efforts of hardware manufacturers. This thesis examines proposals to determine when to power down computers without negatively impacting on the service they are used to deliver, compares and contrasts the efficiency of virtualisation with containerisation, and investigates the energy efficiency of the popular cryptocurrency Bitcoin. We begin by examining the current corpus of literature and defining the key terms we need to proceed. Then we propose a technique for improving the energy consumption of servers by moving them into a sleep state and employing a low powered device to act as a proxy in its place. After this we move on to investigate the energy efficiency of virtualisation and compare the energy efficiency of two of the most common means used to do this. Moving on from this we look at the cryptocurrency Bitcoin. We consider the energy consumption of bitcoin mining and if this compared with the value of bitcoin makes this profitable. Finally we conclude by summarising the results and findings of this thesis. This work increases our understanding of some of the challenges of energy efficient computation as well as proposing novel mechanisms to save energy