Msvm_VirtualSystemSettingData class

Represents the virtualization-specific settings for a virtual machine.

The following syntax is simplified Managed Object Format (MOF) code, and it includes all of the inherited properties.

Syntax

[Dynamic, Provider("VmmsWmiInstanceAndMethodProvider"), AMENDMENT]
class Msvm_VirtualSystemSettingData : CIM_VirtualSystemSettingData
{
  string   InstanceID;
  string   Caption = "Virtual Machine Settings";
  string   Description;
  string   ElementName;
  string   VirtualSystemIdentifier;
  string   VirtualSystemType;
  string   Notes[];
  datetime CreationTime;
  string   ConfigurationID;
  string   ConfigurationDataRoot;
  string   ConfigurationFile;
  string   SnapshotDataRoot;
  string   SuspendDataRoot;
  string   SwapFileDataRoot;
  string   LogDataRoot;
  uint16   AutomaticStartupAction;
  datetime AutomaticStartupActionDelay;
  uint16   AutomaticStartupActionSequenceNumber;
  uint16   AutomaticShutdownAction;
  uint16   AutomaticRecoveryAction;
  string   RecoveryFile;
  string   BIOSGUID;
  string   BIOSSerialNumber;
  string   BaseBoardSerialNumber;
  string   ChassisSerialNumber;
  string   Architecture;
  string   ChassisAssetTag;
  boolean  BIOSNumLock;
  uint16   BootOrder[];
  string   Parent;
  uint16   UserSnapshotType;
  boolean  IsSaved;
  string   AdditionalRecoveryInformation;
  boolean  AllowFullSCSICommandSet;
  uint32   DebugChannelId;
  uint16   DebugPortEnabled;
  uint32   DebugPort;
  string   Version;
  boolean  IncrementalBackupEnabled;
  boolean  VirtualNumaEnabled;
  boolean  AllowReducedFcRedundancy = False;
  string   VirtualSystemSubType;
  string   BootSourceOrder[];
  boolean  PauseAfterBootFailure;
  uint16   NetworkBootPreferredProtocol;
  boolean  GuestControlledCacheTypes;
  boolean  AutomaticSnapshotsEnabled;
  boolean  IsAutomaticSnapshot;
  string   GuestStateFile;
  string   GuestStateDataRoot;
  boolean  LockOnDisconnect;
  string   ParentPackage;
  datetime AutomaticCriticalErrorActionTimeout;
  uint16   AutomaticCriticalErrorAction;
  uint16   ConsoleMode;
  boolean  SecureBootEnabled;
  string   SecureBootTemplateId;
  uint64   LowMmioGapSize;
  uint64   HighMmioGapSize;
  uint16   EnhancedSessionTransportType;
};

Members

The Msvm_VirtualSystemSettingData class has these types of members:

• Properties

Properties

The Msvm_VirtualSystemSettingData class has these properties.

AdditionalRecoveryInformation

Data type: string

Access type: Read/write

Any additional information provided to the recovery action. The meaning of this property is defined by the action in AutomaticRecoveryAction. If AutomaticRecoveryAction is 0 ("None") or 1 ("Restart"), this value is Null. If AutomaticRecoveryAction is 2 ("Revert to Snapshot"), this is the object path to a snapshot that should be applied on failure of the virtual machine worker process.

AllowFullSCSICommandSet

Data type: boolean

Access type: Read/write

True if SCSI commands from the guest operating system are passed to pass-through disks; otherwise, False. If True, SCSI commands emitted by the guest operating system to pass-through disks are not filtered. We recommend that SCSI filtering remain enabled for production deployments.

AllowReducedFcRedundancy

Data type: boolean

Access type: Read/write

Specifies whether live migration of a virtual machine that is configured with a virtual Fibre Channel adapter is allowed to a destination computer that may have no or reduced paths to the target Fibre Channel devices. This property should be cleared after a live migration.

Value	Meaning
False	The virtual machine cannot be live migrated to a target computer that may have no or reduced paths to the target Fibre Channel devices.
True	The virtual machine can be live migrated to a target computer that may have no or reduced paths to the target Fibre Channel devices. The guest operating system may lose connectivity to storage and may behave in an unpredictable manner.

Architecture

Data type: string

Access type: Read-only

The architecture of this system.

Note

Added in Windows 10, version 1709.

x64 ()

arm64 ()

AutomaticCriticalErrorAction

Data type: uint16

Access type: Read/write

Identifies the action to be taken on VM, when a critical error happens, like storage disconnect.

Note

Added in Windows 10 and Windows Server 2016.

None (0)

No specific action will be taken for critical error conditions.

Pause Resume (1)

Causes the VM to be paused and automatically resumed when the critical error condition is resolved.

AutomaticCriticalErrorActionTimeout

Data type: datetime

Access type: Read/write

Qualifiers: SubType ("interval")

Identifies the maximum duration for which the AutomaticCriticalErrorAction will be performed to resolve the critical error. This is applicable only when the value of the AutomaticCriticalErrorAction property is not 0 (None). Once the timeout expires, the VM will be powered off. The value will be rounded up to the nearest minute. A value of 0 implies that the VM should be powered off immediately when it encounters a critical error condition.

Note

Added in Windows 10 and Windows Server 2016.

AutomaticRecoveryAction

Data type: uint16

Access type: Read-only

Action to take for the virtual machine when the software executed by the virtual machine fails. Failures in this case means a failure that is detectable by the host platform, such as a noninterruptible wait state condition. This property is inherited from CIM_VirtualSystemSettingData.

This can be one of the following values.

Value	Meaning
2	None.
3	Restart.
4	Revert to snapshot.
5..32768	Reserved.

AutomaticShutdownAction

Data type: uint16

Access type: Read-only

Action to take for the virtual machine when the host is shut down. This property is inherited from CIM_VirtualSystemSettingData.

This can be one of the following values.

Value	Meaning
2	Turn off.
3	Save state.
4	Shutdown.
5..32768	Reserved.

AutomaticSnapshotsEnabled

Data type: boolean

Access type: Read/write

Indicates whether this virtual machine should have automatic snapshots enabled.

Note

Added in Windows 10, version 1709.

AutomaticStartupAction

Data type: uint16

Access type: Read-only

Action to take for the virtual machine when the host is started. This property is inherited from CIM_VirtualSystemSettingData.

This can be one of the following values.

Value	Meaning
2	None.
3	Restart if previously active.
4	Always start.
5..32768	Reserved.

AutomaticStartupActionDelay

Data type: datetime

Access type: Read-only

The delay time before the virtual machine is automatically started up. This property is inherited from CIM_VirtualSystemSettingData.

AutomaticStartupActionSequenceNumber

Data type: uint16

Access type: Read-only

A number that indicates the relative sequence of virtual machine activation when the host system is started. A lower number indicates earlier activation. If one or more configurations show the same value, the sequence is implementation dependent. A value of 0 indicates that the sequence is implementation dependent. This property is inherited from CIM_VirtualSystemSettingData.

BaseBoardSerialNumber

Data type: string

Access type: Read/write

The serial number of the base board for the virtual machine.

BIOSGUID

Data type: string

Access type: Read/write

The globally unique identifier for the BIOS of the virtual machine.

BIOSNumLock

Data type: boolean

Access type: Read/write

True if the num lock key is set to on by the BIOS; False if the num lock key is set to off by the BIOS.

BIOSSerialNumber

Data type: string

Access type: Read/write

The serial number of the BIOS for the virtual machine.

BootOrder

Data type: uint16 array

Access type: Read/write

Qualifiers: ArrayType ("Indexed"), MAX (4)

The boot order set within the BIOS of the virtual machine. This property is an array of values, BootOrder[0] through BootOrder[3], inclusive, where each value indicates a device to boot from. Each of the 4 values in the array must be set and must not be the same as another value in the array. The virtual machine will first attempt to boot from the device indicated by the first value within the array. If that device does not contain a boot sector, the virtual machine will attempt to boot from the next device specified by the BootOrder property and so on. If no device specified within the BootOrder contains a boot sector the virtual machine will fail to boot. The default value for a virtual machine is [0, 1, 2, 3].

Floppy (0)

The virtual machine will attempt to boot from the floppy disk within the floppy drive.

CD-ROM (1)

The virtual machine will attempt to boot from the first CD or DVD disk found with a boot sector.

IDE Hard Drive (2)

The virtual machine will attempt to boot from the first hard disk drive found with a boot sector.

PXE Boot (3)

The virtual machine will attempt to PXE boot from the network.

SCSI Hard Drive (4)

Reserved (5..65535)

BootSourceOrder

Data type: string array

Access type: Read/write

The boot source order for the virtual machine.

Windows 8.1: This value is not supported until Windows 8.1 and Windows Server 2012 R2.

Caption

Data type: string

Access type: Read-only

A short description of the object. This property is inherited from CIM_ManagedElement.

ChassisAssetTag

Data type: string

Access type: Read/write

The asset tag of the chassis for the virtual machine.

ChassisSerialNumber

Data type: string

Access type: Read/write

The serial number of the chassis for the virtual machine.

ConfigurationDataRoot

Data type: string

Access type: Read-only

The path of a directory where information about the virtual machine configuration is stored. This property is inherited from CIM_VirtualSystemSettingData.

ConfigurationFile

Data type: string

Access type: Read-only

The relative path and file name of a file where information about the virtual machine configuration is stored. This path is relative to the ConfigurationDataRoot property. This property is inherited from CIM_VirtualSystemSettingData.

ConfigurationID

Data type: string

Access type: Read-only

The unique identifier of the virtual machine configuration. This property is inherited from CIM_VirtualSystemSettingData.

ConsoleMode

Data type: uint16

Access type: Read/write

Identifies the Console Mode for the VM.

Note

This property was added in Windows 10 and Windows Server 2016.

Default (0)

COM1 (1)

COM2 (2)

None (3)

CreationTime

Data type: datetime

Access type: Read-only

The date and time at which the settings for the virtual machine were created. If this object represents the current settings for the virtual machine, this value would be the time at which the system was created. If this object represents the snapshot settings for the virtual machine, this value would be the time at which the snapshot was taken. This property is inherited from CIM_VirtualSystemSettingData.

DebugChannelId

Data type: uint32

Access type: Read/write

The channel identifier used to debug the virtual machine using the unified debugger.

DebugPort

Data type: uint32

Access type: Read/write

The TCP/IP port used to debug the virtual machine using synthetic debugging.

DebugPortEnabled

Data type: uint16

Access type: Read/write

Specifies whether the virtual machine is using synthetic debugging. This can be one of the following values.

Off (0)

On (1)

OnAutoAssigned (2)

Auto-assigned

Description

Data type: string

Access type: Read-only

A description of the object. This property is inherited from CIM_ManagedElement, and it is always set to one of the following values.

Value	Meaning
"Active settings for the virtual machine"	This instance refers to a virtual machine.
"Snapshot settings for the virtual machine"	This instance refers to a snapshot.

ElementName

Data type: string

Access type: Read-only

A display name for the object. This property is inherited from CIM_VirtualSystemSettingData, and it is always set to the display name for the machine. This name may not exceed 100 characters in length.

EnhancedSessionTransportType

Data type: uint16

Access type: Read/write

Indicates the transport type to use when connecting to an enhanced session.

Note

This property was added in Windows 10, version 1803.

VMBus Pipe (0)

Hyper-V Socket (1)

GuestControlledCacheTypes

Data type: boolean

Access type: Read/write

Indicates whether the guest can control cache types.

Note

Added in Windows 10 and Windows Server 2016.

GuestStateDataRoot

Data type: string

Access type: Read-only

Filepath of a directory where information about the guest runtime state is stored.

Note

Added in Windows 10, version 1709.

GuestStateFile

Data type: string

Access type: Read-only

Filepath of a file where information about the guest runtime state is stored. A relative path appends to the value of the GuestStateDataRoot property.

Note

Added in Windows 10, version 1709.

HighMmioGapSize

Data type: uint64

Access type: Read/write

The size of the High (above 4GB) Memory-Mapped IO Gap in MB

Note

This property was added in Windows 10, version 1703.

IncrementalBackupEnabled

Data type: boolean

Access type: Read/write

Indicates whether the Hyper-V VSS writer supports taking incremental backups of this virtual machine.

InstanceID

Data type: string

Access type: Read-only

Qualifiers: Key

Uniquely identifies an instance of this class. This property is inherited from CIM_SettingData.

IsAutomaticSnapshot

Data type: boolean

Access type: Read-only

Indicates whether this is a snapshot created automatically for the user.

Note

Added in Windows 10, version 1709.

IsSaved

Data type: boolean

Access type: Read-only

True if the configuration has a reference to a saved state file; otherwise, False. This does not indicate the presence of such a file, only that the configuration specifies one.

LockOnDisconnect

Data type: boolean

Access type: Read/write

Lock the console when disconnecting from vmconnect.

Note

Added in Windows 10 and Windows Server 2016.

LogDataRoot

Data type: string

Access type: Read-only

The path of a directory where log information for the virtual machine is stored. This property is inherited from CIM_VirtualSystemSettingData.

LowMmioGapSize

Data type: uint64

Access type: Read/write

Configures the size, in megabytes, of the first MMIO gap for a virtual machine (VM).

Windows 8.1: This value is not supported until Windows 8.1 and Windows Server 2012 R2.

Range: 128 3584

NetworkBootPreferredProtocol

Data type: uint16

Access type: Read/write

Determines if the preferred protocol for PXE boot is IPv4 or IPv6.

Windows 8.1: This value is not supported until Windows 8.1 and Windows Server 2012 R2.

IPv4 (4096)

IPv6 (4097)

Notes

Data type: string array

Access type: Read-only

User supplied notes that are related to the virtual machine. This property is inherited from CIM_VirtualSystemSettingData.

Parent

Data type: string

Access type: Read-only

If this instance does not represent a system based on a snapshot of a virtual machine, this property is Null. Otherwise, the property holds the object path of the Msvm_VirtualSystemSettingData object on which this instance is based. When building a snapshot tree hierarchy for the virtual machine, this property references the object from which the current instance is derived (the current instance is the child node and the object referenced in this property is the parent node.)

ParentPackage

Data type: string

Access type: Read/write

If this system is a container, the path to the Msvm_ContainerPackage from which this system is based.

Note

Added in Windows 10; removed in Windows 10, version 1703.

PauseAfterBootFailure

Data type: boolean

Access type: Read/write

Indicates whether the BIOS pauses after every boot entry failure waiting for the user to press a key. True if the BIOS pauses; otherwise, False.

Windows 8.1: This value is not supported until Windows 8.1 and Windows Server 2012 R2.

RecoveryFile

Data type: string

Access type: Read-only

The full path of a file where recovery related information for the virtual machine is stored. This property is inherited from CIM_VirtualSystemSettingData.

SecureBootEnabled

Data type: boolean

Access type: Read/write

Indicates whether secure boot is enabled for the virtual machine (VM). True if enabled; otherwise, False.

Note

Secure boot can only be enabled for generation 2 VMs.

Windows 8.1: This value is not supported until Windows 8.1 and Windows Server 2012 R2.

SecureBootTemplateId

Data type: string

Access type: Read/write

The globally-unique identifier of the template of intial values of UEFI Secure Boot related variables.

This is a read-only property, but it can be changed using the ModifyVirtualSystem method of the Msvm_VirtualSystemManagementService class.

Note

Added in Windows 10 and Windows Server 2016.

SnapshotDataRoot

Data type: string

Access type: Read-only

The path of a directory where information about the virtual machine snapshots is stored. This property is inherited from CIM_VirtualSystemSettingData.

SuspendDataRoot

Data type: string

Access type: Read-only

The path of a directory where information about the virtual machine suspend-related information is stored. This property is inherited from CIM_VirtualSystemSettingData.

SwapFileDataRoot

Data type: string

Access type: Read-only

The path of a directory where swap files for the virtual machine are stored. This property is inherited from CIM_VirtualSystemSettingData.

UserSnapshotType

Data type: uint16

Access type: Read/write

Indicates the user-defined snapshot type.

Note

Added in Windows 10 and Windows Server 2016.

Disable (2)

Disable the creation of any snapshot.

ProductionFallbackToTest (3)

Data-consistent snapshot for use in the production environment.Performs a snapshot with application state when the ability to create data consistent snapshot is not available.

ProductionNoFallback (4)

Data-consistent snapshot for use in the production environment.Does not create a snapshot with application state if it is not possible to create a data consistent snapshot.

Test (5)

Snapshot that contains memory and device information for test and development purpose.

Version

Data type: string

Access type: Read-only

The version of the virtual machine in a format of "major.minor", for example "2.0".

VirtualNumaEnabled

Data type: boolean

Access type: Read/write

Qualifiers: ModelCorrespondence ("Msvm_ProcessorSettingData.MaxProcessorsPerNumaNode", "Msvm_MemorySettingData.MaxMemoryBlocksPerNumaNode")

True if virtual non-uniform memory access (NUMA) nodes are projected into the virtual machine; False if the virtual machine will have a single node. If True, the number of virtual NUMA nodes projected into the virtual machine is determined from the values of the Msvm_ProcessorSettingData.MaxProcessorsPerNumaNode and Msvm_MemorySettingData.MaxMemoryBlocksPerNumaNode properties.

VirtualSystemIdentifier

Data type: string

Access type: Read-only

Qualifiers: Override ("CIM_VirtualSystemSettingData.VirtualSystemIdentifier"), ModelCorrespondence ("CIM_ComputerSystem.Name")

The name of the CIM_ComputerSystem object to which this setting data belongs. This property is an override from CIM_VirtualSystemSettingData.

VirtualSystemSubType

Data type: string

Access type: Read-only

The valid values for this property are Microsoft:Hyper-V:SubType:1 and Microsoft:Hyper-V:SubType:2. A Generation 1 VM is subtype 1. A Generation 2 VM is subtype 2.

Windows 8.1: This value is not supported until Windows 8.1 and Windows Server 2012 R2.

Microsoft:Hyper-V:SubType:1 ("Microsoft:Hyper-V:SubType:1")

Microsoft:Hyper-V:SubType:2 ("Microsoft:Hyper-V:SubType:2")

VirtualSystemType

Data type: string

Access type: Read-only

Specifies the type of virtual machine the setting data represents. This property is inherited from the CIM_VirtualSystemSettingData class. This will be one of the following values.

Value	Meaning
"Microsoft:Hyper-V:System:Realized"	A realized virtual machine.
"Microsoft:Hyper-V:System:Planned"	A planned virtual machine.
"Microsoft:Hyper-V:Snapshot:Realized"	A snapshot of a realized virtual machine.
"Microsoft:Hyper-V:Snapshot:Recovery"	A snapshot of a recovery virtual machine.
"Microsoft:Hyper-V:Snapshot:Planned"	A snapshot of a planned virtual machine.
"Microsoft:Hyper-V:Snapshot:Missing"	A missing snapshot.
"Microsoft:Hyper-V:Snapshot:Replica:Standard"	A time-based replication point snapshot.
"Microsoft:Hyper-V:Snapshot:Replica:ApplicationConsistent"	A VSS replication point snapshot.
"Microsoft:Hyper-V:Snapshot:Replica:PlannedFailover"	A planned replication snapshot.

Remarks

Access to the Msvm_VirtualSystemSettingData class might be restricted by UAC Filtering. For more information, see User Account Control and WMI.

Requirements

Requirement	Value
Minimum supported client	Windows 8 [desktop apps only]
Minimum supported server	Windows Server 2012 [desktop apps only]
Namespace	Root\Virtualization\V2
MOF	WindowsVirtualization.V2.mof
DLL	Vmms.exe

See also

CIM_VirtualSystemSettingData

CIM_VirtualSystemSettingData

Virtual System Classes