Which condition would generate this message?

During the installation of ESXi 5.5, the following error message is reported:
Hardware Virtualization is not a feature of the CPU, or is not enabled in the BIOS.
Which condition would generate this message?

A.
LAHF/SAHF is not enabled in the BIOS.

B.
NX/XD is not enabled in the BIOS.

C.
SSE3 is not enabled in the BIOS.

D.
Hyperthreading is not enabled in the BIOS.

Explanation:

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yun

http://www.tuicool.com/articles/IBNvii

Bart

http://pubs.vmware.com/vsphere-55/index.jsp#com.vmware.vsphere.install.doc/GUID-DEB8086A-306B-4239-BF76-E354679202FC.html

Bart

http://kb.vmware.com/selfservice/search.do?cmd=displayKC&docType=kc&docTypeID=DT_KB_1_1&externalId=1011712

Bart

Am I missing the correct answer here?…
Should have been:
Intel Virtualization Technology (VT) or AMD Virtualization (AMD-V) are enabled in the BIOS.
http://pubs.vmware.com/vsphere-55/index.jsp#com.vmware.vsphere.update_manager.doc/GUID-EAA2A890-877F-4A05-B0BC-79D56F739C3F.html

A. is the answer to:
Host CPU is unsupported. New ESXi version requires a 64-bit CPU with support for LAHF/SAHF instructions in long mode.

Wasim

Link provided by Yun explains much better.

We don’t have option of Intel VT or AMD-V as answer but LAHF/SAHF is available.

The article says, “support for LAHF/SAHF is typically tied into the Virtualization Technology (VT) option in a server BIOS which is often referred to Intel VT or AMD-V which is their respective support for virtualization CPU technology”

Sunil

LAHF/SAHF

Sunil

LAHF/SAHF

http://vsphere-land.com/news/what-is-sahf-and-lahf-and-why-do-i-need-it-to-install-vsphere-51.html

Hasan Mikrani

LAHF Stands for “Load AH from Flags” and SAHF stand for “Store AH into Flags. “

Michael095

Supported server platform.
ESXi 5.5 will install and run only on servers with 64-bit x86 CPUs.
ESXi 5.5 requires a host machine with at least two cores.
ESXi 5.5 supports only LAHF and SAHF CPU instructions.
ESXi 5.5 requires the NX/XD bit to be enabled for the CPU in the BIOS.
ESXi supports a broad range of x64 multicore processors.
ESXi requires a minimum of 4GB of physical RAM. Provide at least 8GB of RAM to take full advantage of ESXi features and run virtual machines in typical production environments.
To support 64-bit virtual machines, support for hardware virtualization (Intel VT-x or AMD RVI) must be enabled on x64 CPUs.
One or more Gigabit or 10Gb Ethernet controllers.

Any combination of one or more of the following controllers:
— Basic SCSI controllers. Adaptec Ultra-160 or Ultra-320, LSI Logic Fusion-MPT, or most NCR/Symbios SCSI.
— RAID controllers. Dell PERC (Adaptec RAID or LSI MegaRAID), HP Smart Array RAID, or IBM (Adaptec) ServeRAID controllers.
SCSI disk or a local, non-network, RAID LUN with unpartitioned space for the virtual machines.
For Serial ATA (SATA), a disk connected through supported SAS controllers or supported on-board SATA controllers. SATA disks will be considered remote, not local. These disks will not be used as a scratch partition by default because they are seen as remote.

ESXi Hardware Requirements
http://pubs.vmware.com/vsphere-55/index.jsp?topic=%2Fcom.vmware.vsphere.install.doc%2FGUID-DEB8086A-306B-4239-BF76-E354679202FC.html

GowthamGK

Link provided by Yun explains much better. A is the answer for enabling the hardware Virtualization .

Papali

A and B are requirement of ESX 5.5.
C is need to avoid problems with VMmotion.
D is recommend to active for best performance.

BUT, the correct answer is A, becasue is the only that can generate the message error “Hardware Virtualization is not a feature of the CPU, or is not enabled in the BIOS”