Introduction to Virtualization

2.2 .1 Introduction to Virtualization :

Virtualization is the the physical machine that can run multiple virtual machine and application. With each virtual machine it can share the resources to other physical computers across multiple environment.

Figure 1                                                           Figure 2

Without Virtualization                                    With Virtualization

Different virtual machine can run different operating system and multiple application that can run on physical machine. There is different virtual machine on which multiple opertating system run.the hardware resources of an x86-based computer—including the CPU, RAM, hard disk and network controller—to create a fully functional virtual machine that can run its own operating system and applications just like a “real” computer. Each virtual machine contains a complete system, eliminating potential conflicts.

XEN also provides features like VM migration i.e. relocating VM from one physical machine to other physical machine. The migration can be stop and copy or live. Through the hypervisor that allocate the resouces dynamically and transprently.Multiple operating system that can share hardware resources.