Nested Hypervisors (Hyper-v on a ESXi5 host)

Posted on 2012-08-24
Last Modified: 2012-08-24
Nested Hypervisors (Hyper-v on a ESXi5 host)

Hi Experts,

I like to test a Windows 2012 Hyper-V Infrastructure on a ESXi5 host. All actual Patches on ESXi5 were installed.

Nested Hypervisors:as many "Google Hits" described,  I've to set text hostname.vmx "hypervisor.cpuid.v0 = "FALSE""

Now I can install the hyper-visor core Windows 2012 Version (unfortunately Not the Full Version of Windows 2012 or Windows 2008 R2 ->...[you can not run a hypervisor in a hypervisor] ...)

Everthing works fine (i.e. my Failovercluster) and I use a Full Installation of Windows 2012 to manage the hyper-v Core 2012 Servers with Disk, iSCSI
 and so on via Windows 2012 Server manager.
Now even if I want to start a virtual Maschine (in hyper-v Manager or RSAT Tools) in my hyper-v Core Server i get the error that hypervisor is not running
on the target System. (see picture, Error message in german language)

What else I must configure on the virtual Machine to get a VM in hyper-v Core running?

Thanks a lot.

Best Regards reredok
Question by:reredok
    LVL 37

    Expert Comment

    Silly question but WHY?

    Why would you want to run a hypervisor inside a hypervisor??  Your second level hypervisor would suffer from perforcmance problems without dought IF you can get it to function 100%
    LVL 4

    Author Comment

    It's only for a Testing Hyper-v 3.0 in Windows 2012, SCVMM 2012, Learning for 70-509 and so on
    LVL 116

    Accepted Solution

    Have you altered any other configuration other that the VMX ?

    We've been doing this successfully for years with no issues.

    Follow these articles here:-

    My Blog

    There are TWO tricks you need to do to get this working:-

    1. alter the /etc/vmware/config

    2. make sure the VM template type is ESXi 5.0

    We've are using Windows 2012 Datacenter with Hyper-V Role, and Hyper-V 2012 Core, Clustered with no issues.

    Cluster Hyper-V 2012 using ESXi 5.0 and Altaro Backup
    LVL 4

    Author Closing Comment

    OMG  Read first, then ask ^^ Thanks a lot

    and the solution is:
    CPU mask Level ECX: ---- ---- ---- ---- ---- ---- --H- ----

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