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crp0499Flag for United States of America

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Virtual server?

i run Server 2008 R2 Enterprise on my server.  when i tried to install hyper-v, i received a message that my server hardware didn't support hyper-v.  It's dual xeon 3.6 on an intel board and from my memory of the BIOS, it does not support hardware assisted virtualization.

my question is will vmware or some other option allow me to run virtual servers on this box?  it's not mission critical and I mostly want to play around with virtual machines.

thanks for any solutions.

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Avatar of Andrew Hancock (VMware vExpert PRO / EE Fellow/British Beekeeper)
What is your server?

Make sure it's on the Hardware Compatibility list if you are thinking of ESXi.

HCL link -

Make sure that Intel VT or AMD-V is enabled on the BIOS before initiating the installation.

For Intel-VT, you must have a motherboard, processor and BIOS functions that ALL support Intel VT or AMD-V.
Some of the Intel Xeon 3.6GHz processors do not Support Intel VT.
reboot the server and go into the bios setup... have a look for the VT option and enable it...

if you don't have the VT option, your server can not do virtual servers...
If you send me the specifications of th Intel Motherboard and Xeon Processors, I'll check.
Are they just labelled Intel Xeon 3.6GHz processor, they are not part of the E, L or X series?
If, as you say, it does not support hardware virtualization, then Hyper-V will not run.

Good Luck
You should be able to run ESX 4.0 or earlier, ESXi 4.0 or earlier - but as mentioned for these virtualization products please check the HCL at You will not be able to run a 64-bit OS without the Intel VT support however.

Most of VMware's hosted type 2 hypervisors should run OK. VMware Workstation, Server, or Player.

I have some Dell with Intel Xeon 3.6GHz and they do not support VT. I have 2 on my lab test with ESX and ESXi but I cannot run 64.bit VMs on that servers.

They are 64-bit servers(so I can run the 4,1 version), but cannot have guest with 64-bit systems.

So if this is you case, you can install VMware or Hyper-V, but you can only run VMs with 32-bit Systems Operations.

I have a Dell 2850 and Dell 2950...

The 2850 does not support VT but the 2950 is fine...
I believe ESX or ESXi 3.5 will run 64-bit VMs on your box without VT. Possibly 4.0 also will. I don't believe VT was required for 64-bit guests until 4.1. The hosted products also (Workstation, Player, and Server) should be able to run a 64-bit guest.
We tested this, on ESX/ESXi 3.5 and 4.0, with Xeon 3.6GHz, on HP Proliant DL 380 G4s.

There is not VT support on this machine, in BIOS, and a warning appears in the logs, and it flashes up quickly in red on startup if you are quick to watch it.

and if you try to start a 64 bit machine, the following error appears.

 User generated image
This machine does run 64 bit WIndows 2008 Server (on bare metal), and runs and installs ESX/ESXi 3.5/4.0 fine.

But ESX/ESXi 4.1 will not install.
the machine does not support VT

you will never get ESX 4 on there
you will never get ESX 3.5 with 64bit VM's on there...

I had the same problem, I had to buy a new server :(
@Cuteadder: that screen shot is from a machine with no Intel VT running ESX 4.0U2!

only issue, no 64bit VM support.
ok, is it just a case of enabling VT in bios?
I stand corrected :)

Looking back it was AMD boxes that I was running 64-bit guests on. I know that they were pre VT.

Here is a link to the processor check utility. You can run it yourself and see if your processor will support what you want to do.
@Cuteadder: no not really, Intel-VT - the cpu,motherboard and bios must ALL support the VT functions.

on later HP servers, the CPU supports Intel VT, but HP have not connected the pin on the CPU on the mnotherboard or enabled BIOS functions to enable Intel VT fully. I beleieve this is to do with the price point at which the low costs servers cost.

Other issue with supporting ESX 4.0 are ACPI and BIOS related. e.g. first versions of HP Proliant DL380 G4 BIOS did not support ESX 4.0, but after pressure from the HP Partners, HP released a late fix for the HP Proliant DL380 G4 that fixes this issue! (very last P51 bios fixes it for ESX 4.0), otherwise machine would install, start, and 2 mins later would fall over with PSOD.
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I'll get the MB make and model (I know it's intel but don't remember the model #) and I'll look in the BIOS.
How are we going with this issue? Is it still a problem?