欧博ABG官网-欧博官方网址-会员登入

More recent processor architectures are compatible with EVC. The maximum EVC mode that can be supported by a particular processor is listed in the Broadcom Compatibility Guide for that processor. To use EVC, you must run ESX 3.5 Update 2 or higher with VirtualCenter 2.5 Update 2 or higher and have compatible processors in your servers. EVC does not allow for migration with vMotion between Intel and AMD processors.

EVC capabilities of your server are based on two factors:

The version of vCenter Server that manages the host.

The underlying CPU architecture of the host processor.

For more information please refer to your hardware documentation or contact your hardware vendor for more detail information on Intel VT.

How to enable VT on Intel server

About the tables in this article:

Table 1.1 and 1.2 lists the available EVC baselines and their description

Table 2.1 and 2.2 describes EVC baselines supported by different vCenter Server versions

In general, if a processor can support EVC level XN, it can also support levels XN-1 to X0. For example, a processor that supports the Intel "Sandy Bridge" Generation EVC Baseline has an EVC level of L4. Therefore, it can also support EVC levels L3, L2, L1, and L0. However, it cannot support EVC level L5, which corresponds to the Intel "Ivy Bridge" Generation. Intel EVC Baselines are listed in Table 1.1.

For AMD processors, there are two different sequences of EVC levels: Levels A0 to A3, which support the first 3 generations of AMD Opteron™ processors, and levels B0 and above, which support AMD Opteron™ Generation 3 and later processors.

Note: The AMD Opteron™ Generation 3 (no 3DNow!™) EVC baseline is common to both sequences. For example, an AMD processor that supports the AMD Opteron™ Generation 4 EVC baseline supports the AMD Opteron™ Generation 3 (no 3DNow!™) baseline, but not the AMD Opteron™ Generation 3 baseline. An AMD processor that supports the AMD Opteron™ Generation 3 baseline supports the AMD Opteron™ Generation 3 (no 3DNow!™) baseline, but not the AMD Opteron™ Generation 4 baseline.

AMD EVC baselines are listed in Table 1.2.

Table 1.1: Description of Intel EVC Baselines
  EVC Level   EVC Baseline   Description  
L0   Intel "Merom" Gen. (Intel Xeon Core™ 2)   Applies baseline feature set of Intel "Merom" Generation (Intel Xeon Core™ 2) processors to all hosts in the cluster.  
L1   Intel "Penryn" Gen. (formerly Intel Xeon 45nm Core™ 2)   Applies baseline feature set of Intel "Penryn" Generation (Intel Xeon 45nm Core™ 2) processors to all hosts in the cluster.
Compared to the Intel "Merom" Generation EVC mode, this EVC mode exposes additional CPU features including SSE4.1.  
L2   Intel "Nehalem" Gen. (formerly Intel Xeon Core™ i7)   Applies baseline feature set of Intel "Nehalem" Generation (Intel Xeon Core™ i7) processors to all hosts in the cluster.
Compared to the Intel "Penryn" Generation EVC mode, this EVC mode exposes additional CPU features including SSE4.2 and POPCOUNT.  
L3   Intel "Westmere" Gen. (formerly Intel Xeon 32nm Core™ i7)   Applies baseline feature set of Intel "Westmere" Generation (Intel Xeon 32nm Core™ i7) processors to all hosts in the cluster. Compared to the Intel "Nehalem" Generation mode, this EVC mode exposes additional CPU features including AES and PCLMULQDQ.

Note: Intel i3/i5 Xeon Clarkdale Series processors that do not support AESNI and PCLMULQDQ cannot be admitted to EVC modes higher than the Intel "Nehalem" Generation mode.

Note: Intel Atom™ C2300-C2700 processors support the Intel "Westmere" Gen. EVC baseline although their architecture is different from the architecture of the Intel "Westmere" Generation processors.  
L4   Intel "Sandy Bridge" Generation   Applies baseline feature set of Intel "Sandy Bridge" Generation processors to all hosts in the cluster. Compared to the Intel "Westmere" Generation mode, this EVC mode exposes additional CPU features including AVX and XSAVE.

Note: Intel "Sandy Bridge" processors that do not support AESNI and PCLMULQDQ cannot be admitted to EVC modes higher than the Intel "Nehalem" Generation mode.  
L5   Intel "Ivy Bridge" Generation   Applies baseline feature set of Intel "Ivy Bridge" Generation processors to all hosts in the cluster. Compared to the Intel "Sandy Bridge" Generation EVC mode, this EVC mode exposes additional CPU features including RDRAND, ENFSTRG, FSGSBASE, SMEP, and F16C.

Note: Some Intel "Ivy Bridge" processors do not provide the full "Ivy Bridge" feature set. Such processors cannot be admitted to EVC modes higher than the Intel "Nehalem" Generation mode.  
L6   Intel "Haswell" Generation  
Applies baseline feature set of Intel "Haswell" Generation processors to all hosts in the cluster. Compared to the Intel "Ivy Bridge" Generation EVC mode, this EVC mode exposes additional CPU features including ABMX2,AVX2, MOVBE, FMA, PERMD, RORX/MULX, INVPCID, VMFUNC.  
L7   Intel "Broadwell" Generation   Applies the baseline feature set of Intel "Broadwell" Generation processors to all hosts in the cluster.

Compared to the Intel® "Haswell" Generation EVC mode, this EVC mode exposes additional CPU features including Transactional Synchronization Extensions, Supervisor Mode Access Prevention, Multi-Precision Add-Carry Instruction Extensions, PREFETCHW and RDSEED  
L8   Intel "Skylake" Generation   Applies the baseline feature set of Intel "Skylake" Generation processors to all hosts in the cluster.

Compared to the Intel® "Broadwell" Generation EVC mode,this EVC mode exposes additional CPU features including Advanced Vector 
Extensions 512, Persistent Memory Support Instructions, Protection Key Rights, Save Processor Extended States with Compaction, and Save Processor Extended States Supervisor  
L9   Intel "Cascade Lake" Generation   Applies the baseline feature set of Intel® "Cascade Lake" Generation processors to all hosts in the cluster.

Compared to the Intel® "Skylake" Generation EVC mode, this EVC mode exposes additional CPU features including VNNI and XGETBV with ECX = 1.  
 

 

Table 1.2: Description of AMD EVC Baselines
  EVC Level   EVC Baseline   Description  
A0   AMD Opteron™ Generation 1   Applies baseline feature set of AMD Opteron™ Generation 1 (Rev. E) processors to all hosts in the cluster.  
A1   AMD Opteron™ Generation 2   Applies baseline feature set of AMD Opteron™ Generation 2 (Rev. F) processors to all hosts in the cluster.
Compared to the AMD Opteron™ Generation 1 EVC mode, this EVC mode exposes additional CPU features including CPMXCHG16B and RDTSCP.  
A3   AMD Opteron™ Generation 3   Applies baseline feature set of AMD Opteron™ Generation 3 (Greyhound) processors to all hosts in the cluster.
Compared to the AMD Opteron™ Generation 2 EVC mode, this EVC mode exposes additional CPU features including SSE4A, MisAlignSSE, POPCOUNT and ABM (LZCNT).

Note: Due to 3DNow!™ support being removed from AMD processors after mid 2010, use AMD Opteron™ Generation 3 (no 3DNow!™) when possible to avoid compatibility issues with future processor generations.  
A2, B0   AMD Opteron™ Generation 3 (no 3DNow!™)   Applies baseline feature set of AMD Opteron™ Generation 3 (Greyhound) processors with 3DNow!™ support removed, to all hosts in the cluster.
This mode allows you to prepare clusters containing AMD hosts to accept AMD processors without 3DNow!™ support.  
B1   AMD Opteron™ Generation 4   Applies baseline feature set of AMD Opteron™ Generation 4 (Bulldozer) processors to all hosts in the cluster.
Compared to the AMD Opteron™ Generation 3 (no 3DNow!™) EVC mode, this EVC mode exposes additional CPU features including SSSE3, SSE4.1, AES, AVX, XSAVE, XOP, and FMA4.  
B2   AMD Opteron™ "Piledriver" Generation   Applies baseline feature set of AMD Opteron™ "Piledriver" Generation processors to all hosts in the cluster.
Compared to the AMD Opteron™ Generation 4 EVC mode, this EVC mode exposes additional CPU features including FMA, TBM, BMI1, and F16C.  
B3   AMD Opteron™ "Steamroller" Generation   Applies baseline feature set of AMD Opteron™ "Steamroller" Generation processors to all hosts in the cluster.
Compared to the AMD Opteron™ "Piledriver" EVC mode, this EVC mode exposes additional CPU features including XSAVEOPT RDFSBASE, RDGSBASE, WRFSBASE, WRGSBAS and FSGSBASE.  
B4   AMD "Zen" Generation   Applies baseline feature set of AMD "Zen" Generation processors to all hosts in the cluster.

Compared to the AMD Opteron™ "Steamroller" EVC mode, this EVC mode exposes additional CPU features including RDRAND, SMEP, AVX2, BMI2, MOVBE, ADX, RDSEED, SMAP, CLFLUSHOPT, XSAVES, XSAVEC, SHA, and CLZERO  
B5   AMD "Zen 2" Generation   Applies the baseline feature set of AMD "Zen 2" Generation processors to all hosts in the cluster.

Compared to the AMD "Zen" Generation EVC mode, this EVC mode exposes additional CPU features including CLWB, UMIP, RDPID, XGETBV with ECX = 1, WBNOINVD, and GMET.  

An older release of vSphere supports a new processor but not the corresponding new EVC baseline that exposes the maximum guest-visible features of that processor. A newer vSphere release usually supports both the processor and the new EVC baseline. This is because the older release can only support those features of the new processor that are in common with older processors. Therefore, support of an EVC baseline is not identical to the support of the corresponding processor. Table 2.1 and 2.2 indicate the earliest vSphere release that supports each EVC baseline.

For example, consider the Intel “Sandy Bridge” Generation EVC baseline and the Intel Xeon e5-2400 (a processor based on the Intel “Sandy Bridge” architecture). The processor is supported by both vSphere 4.1 Update 2 (and later) and vSphere 5.0 (and later). But because vSphere 4.1 update 2 lacks support for advanced “Sandy Bridge” features such as AVX, the Intel “Sandy Bridge” Generation EVC baseline is only supported starting with the vSphere 5.0 release. However, vSphere 4.1 Update 2 does support lower level EVC baselines on the Intel Xeon e5-2400, such as Intel “Westmere” Generation and Intel “Merom” Generation.

Not all members of a given processor generation can support the same maximum EVC baseline. Either because of BIOS configuration or branding decisions made by OEM or CPU vendors, some members of that generation may lack a feature required to participate at the maximum EVC baseline. For example, some Intel Xeon i3/i5 Clarkdale processors (based on the Intel “Westmere” processor architecture) do not have AESNI capability, which is required for the Intel “Westmere” Generation EVC baseline. Therefore, these processors cannot support that EVC baseline and must use lower levels of EVC baselines. Another example is where AESNI is disabled by BIOS in an Intel Xeon 5600 processor (also based on the Intel “Westmere” processor architecture); as a result, this processor also cannot support the Intel “Westmere” EVC baseline and must use lower levels of EVC baselines.

The Broadcom Compatibility Guide always correctly lists the maximum EVC baseline for a processor assuming that no BIOS disablement of features has been enforced. As disabling of features by BIOS is OEM and customer specific, the guide cannot address these cases.

Table 2.1: Intel EVC Baselines supported in vCenter Server releases

 

    EVC Cluster Baseline  
vCenter Server Release   Intel "Merom" Generation   Intel "Penryn" Generation   Intel "Nehalem" Generation   Intel "Westmere" Generation   Intel "Sandy Bridge" Generation   Intel "Ivy Bridge" Generation   Intel "Haswell" Generation   Intel "Broadwell" Generation   Intel "Skylake" Generation   Intel "Cascade Lake" Generation  
vCenter Server 5.5   Yes   Yes   Yes   Yes   Yes   Yes   No   No   No   No  
vCenter Server 6.0   Yes   Yes   Yes   Yes   Yes   Yes   Yes   No   No   No  
vCenter Server 6.5   Yes   Yes   Yes   Yes   Yes   Yes   Yes   Yes   No   No  
vCenter Server 6.7   Yes   Yes   Yes   Yes   Yes   Yes   Yes   Yes   Yes   No  
vCenter Server 7.0   Yes   Yes   Yes   Yes   Yes   Yes   Yes   Yes   Yes   Yes  

 

Table 2.2:  AMD EVC Baselines supported in vCenter Server releases

    EVC Cluster Baseline  
vCenter Server Release   AMD Opteron™ Gen. 1   AMD Opteron™ Gen. 2   AMD Opteron™ Gen. 3   AMD Opteron™ Gen. 3 (no 3DNow!™)   AMD Opteron™ Gen. 4   AMD Opteron "Piledriver" Gen.   AMD Opteron™ "Steamroller"
Gen.   AMD "Zen"
Gen.   AMD "Zen 2" Generation  
vCenter Server 5.5   Yes   Yes   Yes   Yes   Yes   Yes   No   No   No  
vCenter Server 6.0   Yes   Yes   Yes   Yes   Yes   Yes   Yes   No   No  
vCenter Server 6.5   Yes   Yes   Yes   Yes   Yes   Yes   Yes   No   No  
vCenter Server 6.7   Yes   Yes   Yes   Yes   Yes   Yes   Yes   Yes   No  
vCenter Server 7.0   Yes   Yes   Yes   Yes   Yes   Yes   Yes   Yes   Yes  

Notes:

Host's CPU hardware should support the cluster's current Enhanced vMotion Compatibility mode, but if some of the necessary CPU features are missing from the host then it may give an error. Check the host's BIOS configuration to ensure that no necessary features are disabled (such as XD, VT, AES, or PCLMULQDQ for Intel, or NX for AMD).  

if you would add a newer host to the cluster, containing newer CPU packages, EVC would potentially hide the new CPU instructions/features to the virtual machines. By doing so, EVC ensures that all VM in the cluster are running on the same CPU instructions allowing for VM to be vMotion between the ESXi hosts

Hosts with Intel Penryn-E processors that are running virtual machines at the ESXi 5.0 compatibility level (hardware version 8) or higher cannot be added to Penryn EVC clusters. The ESXi 5.0 virtual machine compatibility level and higher compatibility levels expose the XSAVE feature to virtual machines running on Penryn-E hosts. The XSAVE feature is masked out in the Penryn EVC mode, causing a virtual machine feature incompatibility with these virtual machines

Changing EVC modes on a cluster require the host to be in maintenance mode to take affect. Ensure that virtual machine is powered off