Tuesday, September 29, 2009

Information about Virtualization

et us first know what Virtualization means?
Virtualization means to run various independent systems on a single physical computer. We simply can say the conceptualization of computer resources. It is completely a technical term which means to create a virtual version of something whether it is computer, storage device, operating system and server or network resources.

The multiple virtual systems can run on different operating systems such as Windows, Red Hat and Mac OS etc. Here each virtual machine has its own hardware as CPU, hard drive, RAM so that it appears that the virtual machines are running on the individual physical system.

Why the need to virtualize?
It is seen that the need to virtualize is nowadays becoming very important in various organizations to minimize their use of resources in order to save energy. Since we are struggling with various other means to save the energy on Earth and utilize it somewhere else, which is why the need to virtualize is very crucial.

It is a proven software technology that has rapidly changed the IT field and changing the people way of communicating. Virtualization has helped the computer professionals to save money and time and hardware resources and to be fast and productive in their work by being flexible. It also helps us in being more efficient and easily managing the work. In has helped us in lowering the expenses, increasing the security, and improving disaster recovery processes in our systems and helping us sustain our goals.

How does it work?
With the help of virtualization you can convert the hardware into software which means the virtual machine can run on its own operating system and applications just like a real computer system. Multiple virtual machines do not interfere with each other so that you all can run applications at the same time on a single computer.

We can simply run Virtualization software on any platform. What we have to do is to create virtual machines which are the collection of files located on the host system. Then we have to configure the settings on the host system, install the OS and then we are done with it. Another way is to creating master image of the virtual image which is fully configured with the OS and the necessary applications into it. Then we can easily and quickly install virtual machines by copying the master image to get the fullest server compatibility.

Types of Virtualization:
Network virtualization is a method of uniting the available resources in a network by splitting up the acquirable bandwidth into channels, each of is independent from the others, and each can be allocated to a particular server or device in real time.
Storage virtualization is the grouping of physical storage from multiple network storage devices into a single storage device that is managed from a central system. It is frequently used in storage area networks (SANs).
Server virtualization is the disguising of server resources from server users. The purpose is to spare the user from having to manage complex details of server resources while increasing resource sharing and consumption and retaining the ability to expand later.

Thus we see how much Virtualization is important to manage our resources easily, save energy, time and money.

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