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Difference Between Full Virtualization and Paravirtualization
In this post, we will understand the differences between full virtualization and paravirtualization
Full Virtualization
This process was introduced by IBM in the year 1966. It is considered to be the first software solution for server virtualization. It uses binary translation and a direct approach method.
- In this, the guest OS is fully isolated using the virtual machine from the virtualization layer and hardware.
- Examples of full virtualization include Microsoft and Parallels systems.
- The virtual machine permits the execution of the instructions in addition to running the unmodified OS in a completely isolated method.
- It is considered to be less secure in comparison to paravirtualization.
- It uses binary translation as the operational technique.
- It is slower in comparison to paravirtualization in terms of operation.
- It is considered to be portable and compatible in comparison to paravirtualization.
Paravirtualization
It belongs to the section of CPU virtualization that uses hypercalls for operations in order to handle instructions at compile time.
- Here, the guest OS isn't isolated fully, but is partially isolated from the virtualization layer and hardware with the help of the virtual machine.
- Examples of paravirtualization include VMware and Xen.
- The virtual machine doesn't implement full isolation of OS.
- It just provides a different API that can be utilized when the OS is subjected to changes.
- It is considered to be more secure in comparison to full virtualization.
- It uses hypercalls at compile time for operational purposes.
- It is quicker in terms of operation in comparison to full virtualization.
- It is considered comparatively less portable and compatible.
Updated on: 02-Mar-2021
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