I'm setting up some new servers to be Hyper-V hosts in Server 2012. I noticed on first boot that the task manager shows the following in the CPU section:

enter image description here

If I enable "Virtualization Technology" in BIOS, it changes to this:

enter image description here

This confuses me, as now "Hyper-V support" is gone. I'm almost certain I should be enabling the "Virtualization Technology" option, but why does "Hyper-V support" disappear? Was it just telling me "Your hardware supports Hyper-V, but you can't use it until you turn on Virtualization"?

  • 1
    What server is that?! – Michael Hampton Jul 9 '13 at 18:37
  • It's a Dell PowerEdge R510. – Jonah H. Jul 9 '13 at 18:38
  • I don't know what the Hyper-V support line means in Task Manager but I can tell you that on my Dell PE R620 servers I have Virtualization Technology enabled in the BIOS, I have Windows Server 2012 with the Hyper-V role installed and am running a number of virtual machines and my Task Manager looks just like your second screen shot. – joeqwerty Jul 9 '13 at 18:50

It may not matter. You want the virtualization extensions enabled in your BIOS if you intend to use the server as a hypervisor.

Perhaps the "Hyper-V support" is displaying a capability that's not available under those settings. It's probably linked to the "Virtualization" flag. But since you need the virtualization BIOS extensions to be enabled in to accomplish your goal anyway... I don't see the problem. Turn it on and keep moving forward.

  • Vote++. Enabling virtualisation technology (e.g.: Intel VT / AMD-V) extends the instruction set of the processor allowing the hypervisor to perform on-chip virtualisation operations. – Simon Catlin Jul 9 '13 at 20:58

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