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What is a Hypervisor?

Latest reply: Jan 21, 2022 04:29:07 301 4 8 0 1

Introduction:

To enter the world of server virtualization or cloud computing, you must be familiar with one of the related software infrastructures such as Microsoft Hyper-V or VMware vSphere or Citrix Xen Server. Working in a virtual environment with current tools is enjoyable and gives you many useful capabilities.


Virtualization allows you to make the most of hardware resources, save money, and provide security and stability for your network infrastructure.


What is a Hypervisor?

The first step to having a cloud or cloud computing and virtualization is to be able to access your virtual machines.

The hypervisor controls these virtual machines.


A hypervisor allows you to host multiple operating systems simultaneously with unique hardware.

 

Suppose you can install and use multiple Windows and Linux operating systems on a physical server in parallel and at the same time.

Each of these operating systems has its own separate hardware and hosts its own applications.

In terms of operating system, each is installed on a separate hardware, which is the allocation of hardware and work resources that the hypervisor is responsible for.


In short, Hypervisor allows multiple operating systems to optimally use unique hardware together.


Currently, the basis of any virtualized network is a hypervisor, which you can also recognize as a single-purpose operating system for virtualization.

Hypervisor allocates resources (CPU, memory, hard disk and network bandwidth) to each operating system correctly and optimally.

And the virtual machine receives resources through the hypervisor.


Types of hypervisors:

> First Type : Hypervisor Native or independent hypervisor


Other names of the first type of hypervisor:

  • Native Hypervisor

  • Type 1 Hypervisor

  • Type I Hypervisor

  • Bare Metal Hypervisor


Hypervisor type 1 (independent hypervisor)

This type of hypervisor is installed directly on the hardware and hosts virtual machines.


The following hypervisors are of this type.

  • Microsoft Hyper-v Hypervisor

  • VMware ESX / ESXi

  • Oracle VM Server

  • Linux KVM

  • Citrix Xen Server


> Second type: Hosted Hypervisor or dependent hypervisor


Other names of the second type of hypervisor:

Hosted Hypervisor

Embedded Hypervisor

Type 2 Hypervisor

Type II Hypervisor




Type II Supervisor (Dependent Hypervisor)

These hypervisors are software that are installed on the operating system.

The following operating systems are Windows, Linux, FreeBSD and… hypervisors.


  • Microsoft Virtual PC

  • VMware Workstation

  • VMware Server (End of Life

  • Oracle Virtual Box


Please Note The best hypervisor nowadays is Huawei hypervisor "FusionCompute" 


Summary

Hypervisors of the first type do not require a separate operating system for installation and are installed directly on the hardware. And type II hypervisors require a host operating system to install. which one is better? The answer to this question depends on the goal you are pursuing.


Certainly type I hypervisors are faster, more efficient, and more secure, and do not require an additional interface layer (host operating system). But the second type of hypervisor is easier to install and compatible with most hardware.


Thank you. 

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little_fish
Admin Created Jan 11, 2022 12:07:06

Hypervisor What is a Hypervisor?-4593605-1

Overview of Hypervisor


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E.DR_91
E.DR_91 Created Jan 11, 2022 12:42:28 (0) (0)
 
user_4358465
Created Jan 19, 2022 09:32:23

Clear & useful post, well done!
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MahMush
Moderator Author Created Jan 21, 2022 04:29:07

well written post
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