# Fault - ActiveVMsBlockingEVC(vim.fault.ActiveVMsBlockingEVC)

Extends
  EVCConfigFault
See also
  HostSystem
Since
  vSphere API 6.0

## Fault Description

An attempt to enable Enhanced VMotion Compatibility on a cluster, or to select a less-featureful EVC mode for a cluster where EVC is already enabled, has failed for the following reason:

- The cluster contains hosts that expose additional compatibility- relevant CPU features beyond those present in the baseline of the requested EVC mode.
- Those hosts have powered-on or suspended virtual machines.

Therefore the EVC configuration has been rejected since it may suppress CPU features that are currently in-use.

Properties

Name | Type | Description
--- | --- | ---
evcMode* | xsd:string | The requested EVC mode. Since vSphere API 4.0
host* | ManagedObjectReference[] to a HostSystem[] | Hosts with active virtual machines that are blocking the operation, because the hosts expose compatibility-relevant CPU features not present in the baseline of the requested EVC mode. Note that in rare cases, a host may be on this list even if its maxEVCModeKey corresponds to the requested EVC mode. This means that even though that EVC mode is the best match for the host's hardware, the host still has some features beyond those present in the baseline for that EVC mode. Since vSphere API 4.0
hostName* | xsd:string[] | The names of the hosts in the host array. Since vSphere API 4.0
Properties inherited from EVCConfigFault
faults
Properties inherited from VimFault
None
Properties inherited from MethodFault
faultCause, faultMessage

*May not be present
Show WSDL type definition
<complexType xmlns="http://www.w3.org/2001/XMLSchema" xmlns:vsan="urn:vsan" name="ActiveVMsBlockingEVC"> <complexContent> <extension base="vsan:EVCConfigFault"> <sequence> <element name="evcMode" type="xsd:string" minOccurs="0"/> <element name="host" type="vsan:ManagedObjectReference" minOccurs="0" maxOccurs="unbounded"/> <element name="hostName" type="xsd:string" minOccurs="0" maxOccurs="unbounded"/> </sequence> </extension> </complexContent> </complexType>