1 2 3 Previous Next 34 Replies Latest reply on Feb 6, 2013 11:26 PM by tandonhat Go to original post
      • 15. Re: Virtualized Intel VT-x/EPT is disabled for this ESX VM. You will only be able to run 32-bit nested VMs
        mullanp2 Lurker

        Hi,

         

        I did have this error but not now thanks to this thread.

        I dont know if anyone has come across this but here goes:

         

        I have acer aspire 9920g with Intel core 2 duo (T7700) with VT-x. ( no VT-x/ept)

        The origional or most recent acer bios did not have a CPU or VT enable category so I installed a modified bios from notebookreview.com.

        This new mod bios allowed me to enable VT and I thought that would be that.

        I installed windows 7 ultimate x86_64 and then installed ESXi 5.

        I then created a new vm and enabled VT-t only and boot from ESXi 5 .iso file.

        I got the VT-x/ept is disabled message as my CPU dosent support EPT. Thats fine....

        But when I continue I get the attached message saying "hardware virtualization is not a feature of the cpu or is not enbled in the bios".

         

        I have checked and rechecked (enable/disabled) VT in the bios and Im now stuck.

         

        Has anyone come across this issue and I apologise if this is the wrong thread

        • 16. Re: Virtualized Intel VT-x/EPT is disabled for this ESX VM. You will only be able to run 32-bit nested VMs
          mullanp2 Lurker

          Also attached is a copy of my CPU-Z output for my Acer Aspire 9920G

           

          Although it says Acer bios Version 1.2 it does allow me to get to the Intel-->CPU sub menu--> VT enable

          • 17. Re: Virtualized Intel VT-x/EPT is disabled for this ESX VM. You will only be able to run 32-bit nested VMs
            Champion

            The ESXi installation warning refers to the virtual CPU, not the physical CPU.  Since you don't have EPT, virtualized VT-x is not supported, so the virtual CPU is not capable of hardware-assisted virtualization.  You should just ignore this warning and continue with the installation.

            • 18. Re: Virtualized Intel VT-x/EPT is disabled for this ESX VM. You will only be able to run 32-bit nested VMs
              RameshRajan Novice

              Hi,

               

              I have a Dell T5400 with Intel Xeon X5450 Processor. As per all the research i did this processor has Intel VT-x capabilities but does not have VT-x/EPT.

               

              I tried all the workarounds around given by jmattson and others but was only able to avoid the error message but cannot achieve the functionality of nested 64-bit vms and fault tolerance capability.

               

              I run Ubuntu Server and then have vmware player to run 2 ESxi 5 hosts for my home lab. Due to the non-availability of VT-x/EPT in certain(most of the) Intel Xeon processors you cannot virtualize a fully functional hypervisor (like ESXi, Xen etc). At the best what you lose is

               

              1) vMotion

              2) Fault Tolerance

              3) Ability to import vmware marketplace OVF appliances because they have require a compiant ESXi.

               

              I am still a novice and apologize if i was not accurate.

               

              RR

              • 19. Re: Virtualized Intel VT-x/EPT is disabled for this ESX VM. You will only be able to run 32-bit nested VMs
                Champion

                RameshRajan wrote:


                I have a Dell T5400 with Intel Xeon X5450 Processor. As per all the research i did this processor has Intel VT-x capabilities but does not have VT-x/EPT.

                 

                I tried all the workarounds around given by jmattson and others but was only able to avoid the error message but cannot achieve the functionality of nested 64-bit vms and fault tolerance capability.

                Though you cannot run nested 64-bit VMs on this processor, you should be able to run 32-bit fault tolerance using binary translation.

                I run Ubuntu Server and then have vmware player to run 2 ESxi 5 hosts for my home lab. Due to the non-availability of VT-x/EPT in certain(most of the) Intel Xeon processors you cannot virtualize a fully functional hypervisor (like ESXi, Xen etc). At the best what you lose is

                 

                1) vMotion

                2) Fault Tolerance

                3) Ability to import vmware marketplace OVF appliances because they have require a compiant ESXi.

                Many Xeon processors do support EPT.  The CPU needs to be based on the Nehalem architecture or later.  See http://en.wikipedia.org/wiki/Xeon#Nehalem-based_Xeon.

                 

                I cannot speak to point (3), but even without virtualized VT-x/EPT, you should be able to take advantage of vMotion, and you can use fault tolerance with binary translation.  See http://www.virtuallyghetto.com/2011/07/how-to-enable-nested-vft-virtual-fault.html for some good instructions.

                • 20. Re: Virtualized Intel VT-x/EPT is disabled for this ESX VM. You will only be able to run 32-bit nested VMs
                  RameshRajan Novice

                  Thanks, Jim. I am going to follow the instruction in the links you provided here and will post an update.

                   

                  By the way when i checked my ESXi VMs (Summary Tab) they say vmotion, ECV and Fault Tolerance as N/A. That's how i came to the conclusion that they were not supported unless you have VT-x/EPT. Again it was my pet peeve against Intel where you have to be very careful on the CPUs you buy as against AMD. All AMD CPUs support AMD-V with RVI.

                  • 21. Re: Virtualized Intel VT-x/EPT is disabled for this ESX VM. You will only be able to run 32-bit nested VMs
                    Champion

                    RameshRajan wrote:

                     

                    By the way when i checked my ESXi VMs (Summary Tab) they say vmotion, ECV and Fault Tolerance as N/A. That's how i came to the conclusion that they were not supported unless you have VT-x/EPT.

                    These are among the many reasons that ESXi in a VM is only supported under Workstation "for educational and demonstration purposes only."  However, you can get these things to work with some effort.

                     

                    Again it was my pet peeve against Intel where you have to be very careful on the CPUs you buy as against AMD. All AMD CPUs support AMD-V with RVI.

                    That's not quite fair.  Early AMD64 parts supported neither.  Then there were AMD64 parts that only supported AMD-V, but not RVI...and the AMD-V support had a serious design flaw.  Only since Barcelona have all AMD64 parts supported AMD-V and RVI.

                     

                    Your Xeon pre-dates Intel support for EPT.  Since Nehalem, all Intel CPUs with VT-x support also support EPT.  Having said that, it is true that some Intel skus do not have VT-x support at all.

                    • 22. Re: Virtualized Intel VT-x/EPT is disabled for this ESX VM. You will only be able to run 32-bit nested VMs
                      RameshRajan Novice

                      As per jmattson i have to take back some points i wrote earlier.

                       

                      1. vmotion and storage vmotion works flawlessly even when you have nested ESxi

                      2. I was uanble to get Fault Tolerance working

                           - My ESXi hosts are in cluster with Vsphere HA enabled

                           - I have a centralized NFS data store which stores fileset of VMs

                           - I received the following message which clearly points to an unsupported CPU

                      3. I tried to install vcenter server appliance in OVF format and failed. It points to cpu incompatibility as well.

                       

                      All said I can live without Fault Tolerance. Thanks for your help j.

                      • 23. Re: Virtualized Intel VT-x/EPT is disabled for this ESX VM. You will only be able to run 32-bit nested VMs
                        manishraj Novice

                        I m also facing the same issue as mention above.  I m using Intel Core2Duo processor. I checked in log file EPT is disable for my host.

                        Please see the attached log file suggest.

                         

                        Thanks

                        Manish

                        • 24. Re: Virtualized Intel VT-x/EPT is disabled for this ESX VM. You will only be able to run 32-bit nested VMs
                          Champion

                          The Core 2 Duo does not have EPT support and cannot run 64-bit nested VMs.

                          • 25. Re: Virtualized Intel VT-x/EPT is disabled for this ESX VM. You will only be able to run 32-bit nested VMs
                            chanaka_ek Novice
                            vExpert

                            All,

                            Capture.JPG

                            I had this same problem today but it turned out that since all my VM's were created in Vmware workstation 7, HPET wasn't enabled and was the reason for this. So, while most of the comments here provide some of the correct steps to take, dont think any of them include all the steps required (assuming that your nested hypervisor VM's were NOT freshly created in Workstation 8 with the HPET support turned on (if this is on, when you go to settings and select processors, on the bottom right, you'd see 2 check boxes and the one that says "Virtualise Intel VT-x/EPT or AMD-V/RVI" should be available.)

                             

                            So, if you power the VM off, select it in the left hand pane within the workstation, you will see on the right to  "Upgrade this virtual machine" select that, select the Hardware compatibility to Workstation 8 to enable HPET, select Alter this VM and  when you click next, you'll see the changes to apply include Adding: HPET.

                             

                             

                            Once thats done, go to the settings of the VM (while powered off) and select the processors on the left and make sure the checkbox "Virtualise Intel VT-x/EPT or AMD-V/RVI" is checked. And also make sure the guest OS is selected as ESXi 5 under options.

                             

                            Thats all you need to do.

                             

                            if this is to be done through editing the vmx file. amongst the following is the key

                             

                            hpet0.present = "TRUE"

                             

                             

                            If the VM was freshly created on Workstation 8, this would be there by default (provided that you used the ESXi5 installation CD during the creation time)

                             

                             

                             

                            Hope this makes sense. (& dont forget to award points)

                             

                            ChanEK

                            • 26. Re: Virtualized Intel VT-x/EPT is disabled for this ESX VM. You will only be able to run 32-bit nested VMs
                              Champion

                              Actually, the HPET doesn't have to be present, but the virtual hardware version does have to be 8.  New virtual CPU features are typically tied to a new  virtual hardware version.

                               

                              In the case of virtualized VT-x/EPT or AMD-V/RVI, we didn't quite make the cut-off for virtual hardware version 8, which first appeared in ESXi 5.0, but we decided to release the feature in Workstation 8 anyway.  That's what the warning is about.  Future products will probably tie virtualized VT-x/EPT or AMD-V/RVI to hardware version 9.  (It is possible that hardware version 8 VMs with the feature will be grandfathered in, but you won't be able to add the feature to a hardware version 8 VM that doesn't already have it.)

                              • 27. Re: Virtualized Intel VT-x/EPT is disabled for this ESX VM. You will only be able to run 32-bit nested VMs
                                baroforo Lurker

                                Hello everyone, I have  a question similar to the original post. Sorry I am am unclear on some virtualization concepts so I will try to be as clear as I can with my case.

                                 

                                I wanted to evaluate vCenter and I setup a vmware environment on my laptop in order to play around with vCenter and spin out some test VMs using an ESXi5 host as a datastore for this vCenter

                                 

                                On my physical laptop (Dell latitude e6500 - in the BIOS, virtualization is enabled on this physical laptop), I am running VM Workstation 8

                                 

                                I am running 2 VMs, 1st is a Win2008 R2 x64 server with the vCenter client and vCenter server installed. The 2nd is a ESXi5 hypervisor (host/datastore).

                                 

                                When I try to spin out a new 64 bit VM (nested VM) in the vCenter client, and then power it on,  I get the following error:

                                 

                                vm3.gif

                                 

                                 

                                on the ESXi host/datastore for the vCenter (virtual), I have VT-x/EPT enabled:

                                 

                                vm2.gif

                                 

                                I tried to check the BIOS of the ESXi, but there are no options to enable the virtualization

                                vm1.gif

                                 

                                I also updated the /etc/vmware/config (on the ESXi server) to set the vhv values to TRUE

                                vm5.gif

                                 

                                 

                                 

                                but running the esxcfg-info| grep "HV Support" I am getting a '0'

                                vm34.gif

                                 

                                So what I am unclear about is 1) how do I enable virtualization on teh ESXi 5 host, when after checking of the VM > Settings > Processors > enable Virtualize Intel VT-x.. and updating the config file I am still getting a '0' for HV Support

                                 

                                and 2) should I enable any other setting on the vCenter server (win2008 R2 x64), or is this related to the ESXi server only? I am not sure where the error to run the 64bit VMs is coming from, is it only from the ESXi host or is it also from the vCenter server?

                                 

                                I hope I explained this clearly.. Thanks!

                                • 28. Re: Virtualized Intel VT-x/EPT is disabled for this ESX VM. You will only be able to run 32-bit nested VMs
                                  Champion

                                  It is likely that your CPU is too old to support virtualized VT-x/EPT.  You need a Core i3, Core i5, or Core i7 to use this feature.

                                  • 29. Re: Virtualized Intel VT-x/EPT is disabled for this ESX VM. You will only be able to run 32-bit nested VMs
                                    vBigG Lurker

                                    I had a lot of trouble runing 64 bit VMs on with Workstation 7 installed Server 2008 R2 some time ago. Initially I bought a 1st Gen Core i5. Then I found out I needed both a CPU and Motherbaord/Chipset that supported Intel VT-d to run 64bit VMs. A New CPU and carefully selected motherboard later all was fine!

                                     

                                    I'm now running workstation 8 and looking to upgrade my host machines and landed on this thread looking for info on VT-x/EPT.


                                    Now Intel do have a couple of helpful pages the first being this one where you can search for CPUs that are support features for virtualisation including VT-x, VT-d and EPT. http://ark.intel.com/search/advanced/?s=t

                                     

                                    There's also a page on Intel Motehrbaords listing INTEL Desktop motherbaords/Chipsets that are compatible with VT and VT-d.

                                    http://www.intel.com/support/motherboards/desktop/sb/CS-030922.htm

                                    I can't seem to find anything similar for VT-x/EPT. This may now be included under the Intel "VT" umbrella.... but I'm not sure. But my tip for folks is the CPU feature support is only part of the puzzle. Both your Chipset AND BIOS needs to support the Intel virtualisation features and it can be very tricky trying to find out before you buy!