[Concept Learning] hypervisor

Source: Internet
Author: User

From Wikipedia: http://en.wikipedia.org/wiki/Hypervisor

1. Definition: A piece of computer software, firmware or hardware that creates and runs virtual machines.
Alias: Virtual Machine Manager (Vmm)

2. Two types of hypervisor (depending on whether or not they are directly running on the hardware)

  • Type I: Runs directly on hardware, such as Citrix xenserver, VMWare ESX/esxi
  • Type II: Run on the operating system, such as KVM

3.Paravirtualization
Guest operating-system to make system cils to the hypervisor, rather than executing machine I/O instructions that the hypervisor simulates.
Paravirtualization is a statement in xen. Other products have different names for this technology: a "hypercall" in parallels workstation, and a "diagnose code" in IBM's VM.

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.