Introduction to Virtualization

Introduction to Virtualization

Virtualization Classification:

Hardware level:

By using VMM to assign and manage hardware, the operating system runs on the. On VMS, VMware, VirtualBox, Xen, KVM

Software level:

Simulates the hardware through the simulator. such as Qemu

Operating system level:

Virtual machine operating system and host operating system share, can simulate thousands of virtual machines. such as OpenVZ

Semi-virtualized and full virtualization:

Semi-virtualized

Both the host and the client have to change the operating system kernel, and the client knows the presence of the host, both of which need to work together. (Xen supports para-virtualization)

Full Virtualization

Host and client provide complete virtual resources, the client does not know the presence of the host, and does not need to make any changes. (KVM, VMware support full virtualization)

This article is from the "Red Leaf It" blog, please be sure to keep this source http://hylinux.blog.51cto.com/10582189/1711039

Introduction to Virtualization