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| Definition | Creates a virtual thing (server, a desktop, a storage device, an operating system or network resources) not actual. |
| Resource Sharing | Resource / Application instances among End users / multiple organizations. |
| Virtual Machine | On hardware (host machine) we install an operating system. On that operating system we create a virtual machine (guest machine).On that virtual machine we install operating systems or applications. Hypervisor is a firmware manages virtual environment. |
| Virtualization Platform | XEN, KVM, OpenVZ |
Virtualization Types
| Virtualization Type | Details |
| Hardware Virtualization |
On existing operating system and hardware we Create a virtual machine known as
Hardware Virtualization. (OS + Hardware)--->VM installed---> Hardware Virtualization. |
| Operating System Virtualization |
On Host operating system virtual machine software is installed known as
operating system virtualization. Hardware->OS(Host operating system )--> operating system virtualization. |
| Server Virtualization | On Server system virtual machine software is installed known as server virtualization. |
| Storage Virtualization | It is the process of grouping of network storage devices are into a single storage device logically known as Storage Virtualization and used for back-up and recovery purposes. |
| Network Virtualization | Here each network resource is given a specific bandwidth and assigned to the server. Idea is to manage the network complexity by breaking it into parts. |
| Data Virtualization | It is a process for abstracting the business data (performance, location e.t.c). |
| Desktop Virtualization | It is used to access a remote desktop |
| Application Virtualization | It allows to users access and use an application from one computer (Logical / Other machine)and which is install in other computer(physical machine) by system administrators. |
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