Virtualization

Virtualization

Introduction

In computing, virtualization is a way of hiding the physical characteristics of a computing platform from users, showing another virtual hardware, emulating one or more isolated environments. The concept of desktop virtualization is the same used in the virtualization of servers, or run multiple operating systems on a single physical device. One way is already widespread, although not use this same terminology is desktop virtualization through the use of terminal servers, wherein each user connected to the system has its session within a same operating system (Wang & Ng, 2010). The terminals are generally machines with more limited resources, since almost all the necessary processing is done on the server.

The basic application virtualization is simultaneously run multiple operating systems on a single server. Instead, many distributed machines, only partly using their capabilities have one, which dynamically allocates processing power needed, depending on changing needs. Cloud computing and VMware are also comes under the umbrella of virtualization technology (Tian, Su & Lu, 2010). This reduce the number of computers can reduce costs by minimizing energy consumption and hardware and workload management. IT infrastructure is thus more flexible and dynamic.

Discussion

Virtualization of servers, desktops and applications is a solution that helps optimize costs through better use of resources. On average, a physical server is used only 5-15%. This means that more than 85% of the resource is not used in any way. Server virtualization allows us to increase the use of up to 60, 70 or even 80%. This provides significant savings on the cost of energy and cost savings resulting from the purchase of equipment (Wang & Ng, 2010).

At the same time operating systems and applications are no longer dependent on the equipment, so that you can easily manage, scale, depending on your needs, as well as replicate and move to another device in case of failure. IT managers are increasingly turning to this form of consolidation of infrastructure, which results in a reduction of its complexity, lower costs of operation and management, and increased resource utilization and data protection.

Cloud Computing and Virtualization

Cloud computing is clearly maturing. Suppliers offer a distinctive technology; they begin to differentiate into business strategy. An example is Salesforce.com, which goes beyond sales management tools in the area of application development or Amazon Web Services, which initially hiring services of virtual machines, has been hosting the full database in the cloud (Tian, Su & Lu, 2010). ...