Virtualization in Cloud Computing
Virtualization is a technique, which permits to share a single physical instance of a resource or an application among different customers and associations. It does this by assigning a logical name to a physical storage and giving a pointer to that physical resource when demanded.
What is the concept behind the Virtualization?
Formation of a virtual machine over existing operating system and hardware is known as Hardware Virtualization. A Virtual machine gives an environment that is logically separated from the underlying hardware.
The machine on which the virtual machine will be formed is known as host machine and that virtual machine is kept as a guest machine.
Types of Virtualization:
- Hardware Virtualization.
- Operating system Virtualization.
- Server Virtualization.
- Storage Virtualization.
1) Hardware Virtualization:
When Virtual Machine Software or Virtual Machine Manager (VMM) is installed directly on the hardware system, the system is known as hardware Virtualization.
The primary occupation of hypervisor is to control and monitoring the processor, memory and other hardware resources.
After virtualization of hardware system we can install diverse operating system on it and run various applications on those OS.
Usage:
Hardware virtualization is for the most part accomplished for the server platforms, because controlling virtual machines is a lot simpler than controlling a physical server.
2) Operating System Virtualization:
When the virtual machine software or virtual machine manager (VMM) is installed on the Host operating system i rather than legitimately on the hardware system is known as operating system virtualization.
Usage:
Operating System Virtualization is mainly utilized for testing the applications on various platforms of OS.
3) Server Virtualization:
When Virtual Machine Software or Virtual Machine Manager (VMM) is installed directly on the server system, the server is known as server Virtualization
Usage:
Server virtualization is done because a single physical server can be divided into various servers on the demand basis and for balancing the load.
4) Storage Virtualization:
Storage virtualization is a way of gathering physical storage from many network storage devices so that it looks like a single storage device.
Usage:
Storage virtualization is for the most part accomplished for back-up and recovery purposes.
Read also : 5 Major Security Objectives for Cloud Computing
How does virtualization work in cloud computing?
Virtualization assumes a significant important role in cloud computing technology, typically in the cloud computing, users share the data present in the clouds like application etc, but actually with the help of virtualization users shares the Infrastructure.
The main use of virtualization technology is to provide applications to their cloud users with standard versions, suppose that the next version of that application is released, then the cloud provider needs to provide the latest version of their cloud users and practically This is possible because it is more expensive.
To overcome this issue we use essentially virtualization innovation, By utilizing virtualization, all servers and the software applications which are required by other cloud providers are kept up by the third party people, and the cloud providers needs to pay the money on monthly or annual basis.
Conclusion
Mainly Virtualization means, running numerous operating systems on a single machine but sharing all the hardware resources. And it helps us to give the pool of IT resources so that we can share these IT resources in order to get benefits in the business.
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