اختصاصی از فایلکو A survey on data center networking for cloud computing دانلود با لینک مستقیم و پر سرعت .

A survey on data center networking for cloud computing

ژورنال:Computer Networks

سال:November 2015

قیمت اصلی:35.95$

Abstract

Data Center Networks (DCNs) are an essential infrastructure that impact the success of cloud computing. A scalable and efficient data center is crucial in both the construction and operation of stable cloud services. In recent years, the growing importance of data center networking has drawn much attention to related issues including connective simplification and service stability. However, existing DCNs lack the necessary agility for multi-tenant demands in the cloud, creating poor responsiveness and limited scalability. In this paper, we present an overview of data center networks for cloud computing and evaluate construction prototypes based on these issues. We provide, specifically, detailed descriptions of several important aspects: the physical architecture, virtualized infrastructure, and DCN routing. Each section of this work discusses and evaluates resolution approaches, and presents the use cases for cloud computing service. In our attempt to build insight relevant to future research, we also present some open research issues. Based on experience gained in both research and industrial trials, the future of data center networking must include careful consideration of the interactions between the important aspects mentioned above.

Keywords

• Cloud computing, Data center networking,
• Virtualization, Software defined networking

اختصاصی از فایلکو Pricing strategy for cloud computing: A damaged services perspective دانلود با لینک مستقیم و پر سرعت .

Pricing strategy for cloud computing: A damaged services perspective

ژورنال:Decision Support Systems

سال:October 2015

قیمت اصلی:39.95$

Highlights

•

A hybrid strategy is shown to outperform a one-service-only strategy in most cases.

•

A hybrid strategy performs well especially when clients are sensitive to services interruptions or when task values are highly differentiated.

•

The presence of interruptions serves as a quality differentiator between the two types of services offered by the vendor, assuring the efficacy of the hybrid strategy.

•

The presence of interruptions also provides the vendor with resource reallocation flexibility.

•

If the vendor introduces a capacity limit in its contract, clients need to adopt a dynamic-threshold submission strategy to reserve limited computing resources for future high-value jobs.

•

The vendor is able to use the capacity limit as a tool, together with the hybrid strategy, to improve its profit.

---

Abstract

How effective is a hybrid pricing strategy for a cloud computing services vendor that mixes fixed-price reserved services with spot-price on-demand services? This research offers a decision support model to create the appropriate strategy for IT services based on prior research on information goods, electricity pricing, product versioning, and revenue yield management. The goal is to establish whether interruptible spot-price on-demand cloud computing services — which we view as damaged services — are valuable to the vendor. The results from the analysis of an economic model show that a hybrid strategy outperforms a one-service-only strategy in most cases, especially when clients are sensitive to services interruptions or when task values are highly differentiated. A more intriguing finding is that a vendor should permit the possibility of services interruptions even when clients are highly sensitive to their occurrence. The presence of interruptions serves as a quality differentiator between the on-demand services and reserved services, assuring the efficacy of the hybrid strategy. Moreover, a vendor may use capacity limit, in the hybrid strategy, as a tool to further improve its profit. To our knowledge, this research is the first to propose the damaged services perspective as an analogy for damaged goods in the cloud software market.

Keywords

• Cloud computing, Damaged services, Pricing strategy, Services interruption, Spot prices