تکنولوژی ابری و بهبود عملکرد با سرویس یکپارچه (Intserv) و سرویس متمایز (Diffserv) برای رایانش ابری

ABSTRACT Cloud Technology and Performance Improvement with Intserv over Diffserv for Cloud Computing

Especially lately information technology and social media internet sites often include articles about the benefits of cloud computing and their products. If we simply define the Cloud Computing; It is only accessible architecture to the data, applications or services without any extra software, hardware or service infrastructure, which regardless of location [1].

According to the U.S. National Institute of Standards and Technology (NIST); “Cloud computing is a model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction” [2].

Cloud computing brings us a new platform to realize data sharing which is done previously on web services such as social networking sites, file sharing portals by moving them to another dimension to be accessed anytime, anywhere. In this way, the world has shrunk even further, personal or corporate information has become much easier to achieve.

Cloud computing is not just about sharing the data at hand, but also the common use of infrastructure services or hardware sharing brought us the biggest advantage of cloud technology. In this way, by providing remote access to an infrastructure service, it is possible to have more efficient infrastructure resources available. In addition, users find the software they need already installed on the internet that are ready for use. By this way, they save thousands of dollars by depending on the amount they use and pay the appropriate amounts.

Cloud computing will be a leading structure for technologies and adaption of cloud structure to our daily usage with maximum benefits is the main goal. Almost every major corporation in the IT industry have researches and developments on this subject. For this reason, the aim of this study is to show the effective usage of cloud computing technology in business and daily usage rather than standard network infrastructure. The lack of research on active usage of cloud computing on business life is motivated us to work on this subject. More researches on cloud computing will cause improvement in performance, security, scalability, issues and development of applications compatible with cloud.

There were several papers and general introductions to cloud computing, which bring an overview of the field but yet there is not an enough research on business or daily usage of cloud computing. It is obvious that a survey in such a fast moving field will soon be out of date, but such a survey like this would provide a good base for the Cloud Computing to set new work and that it can be useful as a resource for researchers new in this area. Another thing that is wished to be accomplished with this paper is not only a definite picture of what the cloud does well and a brief overview of it, but also a short survey on usage in real life, its performance and improvement of performance.

Today, emergence of the real-time applications demands more resources. The main challenge is to maximize the resource utilization by QoS mechanisms. The contribution of this work is to analyse QoS performance metrics such as end-to-end delay, delay variation, throughput, packet loss and queuing delay for real-time applications such as video and voice conferencing, email traffic, FTP download in cloud computing networks. In the next generation Internet, there will be more demand for real-time applications and multicast services. In order to meet the requirements, Integrated Services (IntServ) and Differentiated Services (DiffServ) have been combined. The study explores the behaviour of cloud model reply to various QoS metrics against different network scenarios.

In this paper we discuss the main parts of cloud computing, deployments and advantages for building clouds. Research in this field appeared to be split into two parts. One investigates the performance comparison between standard network and cloud network. Second one is to try to improve efficiency of cloud network by using DiffServ/IntServ combination in a newly proposed hybrid model.

This paper is structured as follows: Section 2 outlines the work done in this area; Section 3, 4 discusses deployment of cloud computing; Section 5 outlines the advantages that brings with cloud computing; Section 6 expresses the quality of service in cloud computing; Section 7 continues with design implementation and simulates the models; finally Section 8 concludes the review by summing up the research entire paper.