ESXi

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  • 1.  hypervisor

    Posted Mar 29, 2010 11:07 AM

    Hi

    What are exact differences between hypervisor Type1 and Type2?



  • 2.  RE: hypervisor

    Posted Mar 29, 2010 12:08 PM

    Hello.

    Wikipedia has good info.

    Good Luck!



  • 3.  RE: hypervisor

    Posted Mar 29, 2010 03:35 PM

    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?



  • 4.  RE: hypervisor

    Posted Mar 29, 2010 03:59 PM

    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



  • 5.  RE: hypervisor

    Posted Mar 30, 2010 09:34 PM

    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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    -= If there's any mistake in my notes, please correct me! =-

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    Sohrab Kasraeian Fard



  • 6.  RE: hypervisor

    Posted Apr 27, 2010 11:47 PM

    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).