Implementation levels of virtualization

Implementation level of virtualization short describe....

1. Implementation levels of virtualization By Gokulnath S

2. Virtualization Virtualization is a computer architecture technology by which multiple virtual machines (VMs) are multiplexed in the same hardware machine. Purpose of VM Enhance resource sharing by many users Improve computer performance in terms of resource utilization and application flexibility

3. Difference between traditional and vitrual machine A traditional computer runs with a host operating system specially tailored for its hardware architecture. After virtualization, different user applications managed by their own operating systems (guest OS) can run on the same hardware, independent of the host OS.

4. Tradition computer and After virtualization

5. Virtualization layers The virtualization software creates the abstraction of VMs by interposing a virtualization layer at various levels of a computer system T he instruction set architecture (ISA)  level Hardware level Operating system level  Library support level Application level 

6. Application in Five Abstraction levels

7. Advantage of OS Extension for Virtualization VMs at OS level has minimum startup/shutdown cost. OS-level VM can Easily Synchronize with its enviroment . Disadvantage of OS Extension for Virtualization All VMs in the same OS container must have the same or similar guest OS, which restrict application flexibility of different VMs on the same physical machine.

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