hypervisor

[anonimous]

Hi

What are exact differences between hypervisor Type1 and Type2?

[vmroyale]

Hello.

Wikipedia has good info.

Good Luck!

[anonimous]

Thx, but there are 2 two types of hypervisor:

Type 1 (or native, bare-metal) hypervisors are software systems that run directly on the host's hardware to control the hardware and to monitor guest operating-systems.

Type 2 (or hosted) hypervisors are software applications running within a conventional operating-system environment. With the hypervisor layer as a distinct second software level, guest operating systems run at the third level above the hardware.

How it works exactly hypervisor Type1?

Is hypervisor software or driver installed in the BIOS?

Does VMware View support the hypervisor Type1?

[AndreTheGiant]

Actually there is also the hybrid version (with some piece in Host kernel), use from Workstation, Virtual PC and so on...

The type-1 works directly on the top of hardware layer and do not required a host OS.

But to have a local management, some kind of user interface, and to boot the system there is still a host OS.

For example in ESX there is a RedHat/CentOS (for the Service Console) and in ESXi there is a busybox system (for the hidden console).

Note that there are two kind of type-1 hypervisor:

• monolithic -> like ESX

• microkernel -> like Xen or Hyper-V

One of the difference is related (to make it simple) on where reside the hypervisor drivers...

Does VMware View support the hypervisor Typ1?

View require vCenter and vCenter works with ESX/ESX

Andre

[Kasraeian]

Hi

Also you can check following links, I hope they helps a little.

What is Visrtualization?

Server Virtualization: Just how many types are there?

Type 1 and Type 2 Hypervisors Explained

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Sohrab Kasraeian Fard

[anonimous]

Here is a very good link:

Type 1 Hypervisor

Type 1 (or native, bare-metal) hypervisors are

software systems that run directly on the host’s hardware to control the

hardware and to monitor guest operating-systems. A guest operating

system thus runs on another level above the hypervisor. Some examples

are [VMware

ESX|http://www.vmware.com/products/esx/], Xen, Microsoft Hyper-V, etc.

Type 1 hypervisors are appropriate when you want to provide the only

OS that is used on a client. When a user turns a machine on, he only

sees a single OS that looks and feels local.

Type 2 Hypervisor

Type 2 (or hosted) hypervisors are software

applications running within a conventional operating-system

environment. Considering the hypervisor layer as a distinct software

layer, guest operating systems thus run at the third level above the

hardware. Some examples are [VMware

Workstation|http://www.vmware.com/products/workstation/], VMware Fusion, MED-V, Windows Virtual PC, VirtualBox, Parallels, MokaFive, etc.

Type 2 hypervisors are appropriate when you want a user to have

access to their own local desktop OS in addition to the

centrally-managed corporate VDI OS. This could be for an [employee-owned

PC|http://www.brianmadden.com/content/article/The-rise-of-the-employee-owned-PC-in-a-world-where-CIOs-are-losing-control]scenario, or it could be a situation where you have contractors,

etc., who need access to their personal apps and data in addition to the

company’s apps and data.

Client Hypervisors

Over the past 5 years, Type 1 hypervisors are dominantly used in the

server market, whereas, Type 2 hypervisors are being used on clients,

i.e., desktops and laptops. Recently, the need for a Type 1 hypervisor

that runs locally on a client device, called the client hypervisor, has

emerged for supporting the Virtual Desktop Infrastructure VDI).