Exploiting Renewable Sources: When Green SLA Becomes a Possible Reality in Cloud Computing

Abstract

While the proliferation of Cloud services have greatly impacted our society, how green are these services is yet to be answered. Although, demand escalation for green services has grown due to societal awareness, the approaches to provide green services and establish Green SLAs remain oblivious for cloud or infrastructure providers. The main challenge for cloud provider is to manage Green SLAs with their customers while satisfying their business objectives, such as maximizing profits by lowering expenditure for green energy. Since, Green SLA needs to be proposed based on the presence of green energy, the intermittent nature of renewable sources makes it difficult to be achieved. In response, this paper presents a scheme for green energy management in the presence of explicit and implicit integration of renewable energy in data center. More specifically we propose three contributions: i) we introduce the concept of virtualization of green energy to address the uncertainty of green energy availability, ii) we extend the Cloud Service Level Agreement (CSLA) language to support Green SLA by introducing two new threshold parameters and iii) we introduce greenSLA algorithm which leverages the concept of virtualization of green energy to provide per interval specific Green SLA. Experiments were conducted with real workload profile from PlanetLab and server power model from SPECpower to demonstrate that, Green SLA can be successfully established and satisfied without incurring higher cost.

Making Data Centers Fit for Demand Response: Introducing GreenSDA and GreenSLA Contracts

“…GreenSLA concept is being subject of recent attention by the academic community [6], [16], [17], [18], [19], [20]. In [17], authors propose a novel approach for the reduction of energy consumption in data centres that will yield benefits both in terms of running costs and its environmental impact, where the method is based on the introduction of collaborative interactions and flexibility clauses in contracts between all the DC ecosystem entities.…”

“…Besides, a performance evaluation based on a proof of concept implementation is presented in this paper. Recent proposals [18], [19], [20] tackles the GreenSLA as a contract between the ITC and DC where several strategies are proposed inside the DC to reduce energy consumption and increase the use of renewable energy when available. The specific strategies used in the DC depends on the nature of its systems.…”

An Efficient Energy Management Approach Using Fog-as-a-Service for Sharing Economy in a Smart Grid

“…As the cloud data centers are one of the major electricity consumers, it is thus a big challenge for cloud service providers to ensure their green service level agreements with their customers while maintaining their business objectives. In [10], the authors have proposed the implicit and explicit integration of RESs with traditional power sources for green power management. The authors have handled the uncertainty of RESs through virtualization.…”

A Research Paper on Green Computing Using Energy Efficient Task Allocation Strategy in Cloud Environment

“…More specifically, we propose a solution that allows providers to determine the best green destination where virtual machines should be migrated in order to reduce the carbon dioxide emissions of the whole federated environment. Md Sabbir Hasan et al [7] Discusses the proliferation of Cloud services have greatly impacted our society, how green are these services is yet to be answered. Although, demand escalation for green services has grown due to societal awareness, the approaches to provide green services and establish Green SLAs remain oblivious for cloud or infrastructure providers.…”