[Ilugc] Virtualization
- From: benjaminrtz@xxxxxxxxx (benjamin)
- Date: Thu Aug 21 10:25:21 2008
Usually, there _is_ a base operating system which is called the host.
The tasks of the host are (at least):
a. To make it convenient to create and manage guests.
b. To manage hardware access for the hosts.
in Xen, would you call Dom0 the host?
Dom0, a special domain (VM) too runs on top of Xen
ESX, COS is not the host as VMkernel runs the hardware
Here too, COS is a special VM running on top of VMkernel.
There is also something similar in Hyper-V
In Hypervisor based Virtualisation Softwares, I do think the control consoles
are host as they do not really host the VMs. They can just communicate with
the Virtualization Layer which other user created VMs cannot. And Hypervirsor
based virtualizations softwares are installed on bare metal.
Of course, VirtualBox, VMware server, VPC all needs bases OS as the host.
Yes, the tasks you mentioned are right.
benjamin rualthanzauva
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