完全虚拟化和半虚拟化之间的区别

1.完全虚拟化：
完全虚拟化由IBM于1966年推出。它是服务器虚拟化的第一个软件解决方案，它使用二进制转换和直接方法技术。在完全虚拟化中，来宾OS被虚拟机与虚拟化层和硬件完全隔离。 Microsoft和Parallels系统是完全虚拟化的示例。

2.半虚拟化：
准虚拟化是CPU虚拟化的类别，它使用超级调用进行操作以在编译时处理指令。在半虚拟化中，来宾操作系统不是完全隔离的，而是由虚拟机与虚拟化层和硬件部分隔离的。 VMware和Xen是半虚拟化的一些示例。

完全虚拟化和半虚拟化之间的区别如下：

S.No.	Full Virtualization	Paravirtualization
1.	In Full virtualization, virtual machine permit the execution of the instructions with running of unmodified OS in an entire isolated way.	In paravirtualization, virtual machine does not implement full isolation of OS but rather provides a different API which is utilized when OS is subjected to alteration.
2.	Full Virtualization is less secure.	While the Paravirtualization is more secure than the Full Virtualization.
3.	Full Virtualization uses binary translation and direct approach as a technique for operations.	While Paravirtualization uses hypercalls at compile time for operations.
4.	Full Virtualization is slow than paravirtualization in operation.	Paravirtualization is faster in operation as compared to full virtualization.
5.	Full Virtualization is more portable and compatible.	Paravirtualization is less portable and compatible.
6.	Examples of full virtualization are Microsoft and Parallels systems.	Examples of paravirtualization are VMware and Xen.