Cloud computing is a usage of very large scalable and virtualized resources in a dynamic way over the internet .In Cloud computing multiple cloud users can request number of cloud services simultaneously, so there must be a provision that all resources are made available to requesting user in efficient manner to satisfy their need without compromising on the performance of the resources. Clouds can make it possible to access applications and associated data from anywhere, anytime. One of the major challenges in cloud computing is related to optimizing the resources being allocated. The other challenges of resource allocation are meeting customer demands, data center management and application requirements. Our system multiplexes virtual to physical resources adaptively based on the changing demand. We use the skewness metric to combine Virtual Machines (VMs) with different resource characteristics appropriately so that the capacities of servers are well utilized. Our algorithm achieves both overload avoidance and green computing for systems with multi resource constraints.
Key Terms: Cloud computing, Resource Management, Virtualization, Overload Avoidance, Green Computing, Virtual Machine Monitor, Skewness
1. Introduction
The notion of Cloud computing has not only reshaped the field of distributed systems but also undamentally changed how businesses utilize computing today. While Cloud computing provides many advanced features, it still has some shortcomings such as the relatively high operating cost for both public and private Clouds. The area of Green computing is also becoming increasingly important in a world with limited energy resources and an ever-rising demand for more computational power. Studies have found that servers...
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... of any PM is above the hot verge (i.e., a hot spot) or not. If yes then some VMs running on them will be transferred away to reduce their load. The cold spot solver checks that the average utilization of actively used PMs (APMs) is below the green computing threshold or not. If so, some of those PMs could possibly be turned off to save energy. It recognizes the set of PMs whose consumption is below the cold threshold (i.e., cold spots) and then tries to transfer (migrate) away all their VMs. It then creates a migration list of VMs and compiles it and passes it to the Usher CTRL for execution [5].
4.1 Disadvantages of Existing System
The main pitfall of the system is that how to decide the mapping properly, so that the resource demands of VMs are met while the number of PMs used is minimized. The two main disadvantages are overload avoidance and green computing.
Cloud is the result of a decade research in the field of distributing computing , utility computing, virtualization , grid computing and more recently software, network services and web technology which is changeable evolution on demanding technology and services also as looking to the rapid growth of cloud computing which have changed the global computing infrastructure as well as the concept of computing resources toward cloud infrastructure. The important and interest of cloud computing increasing day by day and this technology receives more and more attention in the world (Jain, 2014) the mostly widely used definition of cloud computing is introduced by NIST “as a model for enabling a convenient on demand network access
Iansiti, M., & Herman, K. (2011). CA Technologies: Bringing the Cloud to Earth. Case Study, 24.
To understand how cloud computing can be of value to an organization, it is important to us that we understand the cloud and its components. There are three different types of cloud computing services referred to as Infrastructure as a Service (IaaS), Software as a Service (SaaS) and Platform as a Service (PaaS). IaaS delivers cloud computing infrastructure servers, storage, network and operating systems as an on-demand service. SaaS is about software deploying over the Internet. PaaS allows a creation of web applications without the complexity of buying and maintaining the software and infrastructure. In this paper, I will suggest that Innovartus Technology Inc should use IaaS as a replacement for PaaS because IaaS is a rapidly developing field with resources such as better services, cost variability, utility pricing model and dynamic scaling.
When they wanted to save photos online instead of on your personal computer, they are able to use “cloud computing” service. Cloud computing means that the transfer of computing data or information over the internet. Not just to keep data in your personal computer, they are able to save the data on internet server to open their data in any computer. In this report we will walk through about what is cloud computing, what kinds of model did cloud computing have, types of cloud computing, benefits of cloud computing, and security.
Cloud computing has captured the attention and imagination of the business and IT worlds as of late. A general atmosphere of positive analysis surrounds the potential and future of cloud computing. “In May 2008, Merrill Lynch . . . estimated the cost advantages of Cloud Computing to be three to five times for business applications and more than five times for consumer applications” (Slabeva 2010, 47). An IDC forecast suggested a near three-fold growth of spending on cloud-related services from 2008 to 2012, attaining forty-two billion dollars (Slabeva 2010). Amid all these forecasts and positive predictions, it seems obvious that the cloud is here to stay, and that those who harness it correctly will have the opportunity to grow their business, seemingly almost indefinitely.
The article is a credible primary source peer-reviewed journal article published in Communications of the Association for Computing Machinery (ACM). This is a non-profit organization which publishes computing articles of differing views. Martin Ford is highly qualified in technology and the future, having a business degree along with a computer engineering degree. He is unbiased in his article, using only logic and data to support his
Enterprises and individual users are outsourcing their services on the web, instead of maintaining the resources of their own. Outsourcing of technical resources enables the organization to concentrate on business need instead of technical aspect, which is looked after by the expert of the IT area. To facilitate such users, a web based paradigm known as cloud computing has emerged and offering the services on utility model [p3]. The major goal of Cloud computing is to reduce the operating cost, increase throughput, increase the reliability and availability [p10].
VMM allows multiple virtual machines to be running at the same time and transparently multiplexes resources between them [Gol74]. The VMM also isolates the virtual machines from on...
ISTF, JUCC. "Background of Cloud Computing." Network Computing. Computing Services Centre, 27 06 2011. Web. 2 Apr 2014.
A major difficulty with the virtual machine involves disk systems. For instance, the physical machine has two disk drives but wants to support five virtual machines. The physical machine is unable to allocate a disk drive to each virtual machine because the virtual machine software itself will need substantial disk space to provide virtual memory and spooling. To solve this dilemma, virtual drives that are identical in all respects except for size are provided. The system implements each virtual disk by allocating as many tracks on the physical disks as the virtual disk needs.
When every IT professional starts their journey into the IT Sector, they are bound to come across social issues which will have to be dealt with professionally. One important Issue is being green in Information Technology. The earth’s resources are continuously becoming scarce whilst the demand for them increases sharply. Every IT professional should understand that power consumption does not cover the whole green IT spectrum. Recycling dangerous electronic waste, optimising/virtualising servers to distribute workloads, having a long term green policy, reducing your workplace carbon foot print such as the paperless desk and an efficient data centre-business continuity model; these are a few examples of issues that professional must consider as these issues all occur in the green IT world.
Computer virtualization technology has progressed leaps and bounds in a relatively short period of time. Since its inception in late 1960s, it has developed into a massive technology industry that allows companies and individuals of all status to take advantage of the many possibilities it affords. Virtualization has be a key part of reducing the resources required to deliver our apps and services, while maintaining resiliency and not increased the requirement for system
People are always looking for ways to save money. By using “Green” computer components you can save money and energy. Everyone having a computer powered on days at a time can use up a lot of energy, which will lead to a large energy bill. There is a lot of different ways to adapt your computer to be more energy efficient. Using more energy efficient computer components and changing settings in your operating system will save you big. By purchasing more energy efficient components such as processors, hard drives and computer monitors you can make your computer consume less power thus saving energy.
In cloud computing, the word cloud is used as a metaphor for “the internet”. So the cloud computing means “a type of internet-based computing”, where different services such as servers, storage and applications are delivered to an organization’s computers and devices through the internet.
which result in the collapse of processor utilization. There are many ways to deal with the