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Msvm_MemorySettingData class

Hyper-V

Represents the configured state of the memory for a virtual system.

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

Syntax

class Msvm_MemorySettingData : CIM_ResourceAllocationSettingData
{
  string  Caption = "Memory";
  string  Description = "Settings for Microsoft Virtual Machine Memory";
  string  InstanceID;
  string  ElementName = "Memory";
  uint16  ResourceType = 4;
  string  OtherResourceType;
  string  ResourceSubType = "Microsoft Virtual Machine Memory";
  string  PoolID;
  uint16  ConsumerVisibility;
  string  HostResource[];
  string  AllocationUnits = "MB";
  uint64  VirtualQuantity;
  uint64  Reservation;
  uint64  Limit;
  uint32  Weight;
  boolean AutomaticAllocation = True;
  boolean AutomaticDeallocation = True;
  string  Parent;
  string  Connection[];
  string  Address;
  uint16  MappingBehavior;
  boolean IsVirtualized = True;
  string  DeviceID = "Microsoft:GUID";
  string  DeviceIDFormat;
  boolean DynamicMemoryEnabled;
  uint32  TargetMemoryBuffer;
};

Members

The Msvm_MemorySettingData class has these types of members:

Properties

The Msvm_MemorySettingData class has these properties.

Address
Data type: string
Access type: Read-only

The address of the resource. For example, the MAC address of an Ethernet port. This property is inherited from CIM_ResourceAllocationSettingData and it is always set to NULL.

AllocationUnits
Data type: string
Access type: Read-only

The units of allocation used by the Reservation and Limit properties. This property is inherited from CIM_ResourceAllocationSettingData and it is always set to "MB".

AutomaticAllocation
Data type: boolean
Access type: Read-only

Indicates whether the resource will be automatically allocated. For example when set to True, when the consuming virtual computer system is powered on, this resource would be allocated. A value of False indicates the resource must be explicitly allocated. For example, the setting may represent removable media (such as a CD-ROM or a floppy) where at power on time, the media is not present. An explicit operation is required to allocate the resource. This property is inherited from CIM_ResourceAllocationSettingData and it is always set to True.

AutomaticDeallocation
Data type: boolean
Access type: Read-only

Indicates whether the resource will be automatically allocated. For example when this property is set to True, when the consuming virtual computer system is powered on, this resource would be allocated. When this property is False, the resource must be explicitly allocated. For example, the setting may represent removable media (such as a CD-ROM or a floppy) where at power on time, the media is not present. An explicit operation is required to allocate the resource. This property is inherited from CIM_ResourceAllocationSettingData and it is always set to True.

Caption
Data type: string
Access type: Read-only
Qualifiers: MaxLen (64)

A short textual description (one-line string) of the object. This property is inherited from CIM_ManagedElement and it is always set to "Memory".

Connection
Data type: string array
Access type: Read-only

The device to which this resource is connected. For example, a named network or switch port. This property is inherited from CIM_ResourceAllocationSettingData and it is always set to NULL.

ConsumerVisibility
Data type: uint16
Access type: Read-only

Describes the consumers visibility to the allocated resource. This property is inherited from CIM_ResourceAllocationSettingData and it is always set to NULL.

Description
Data type: string
Access type: Read-only

A textual description of the object. This property is inherited from CIM_ManagedElement and it is always set to "Settings for Microsoft Virtual Machine Memory".

DeviceID
Data type: string
Access type: Read-only

Address or other identifying information to uniquely name the logical device. This property is always set to "Microsoft:GUID".

DeviceIDFormat
Data type: string
Access type: Read-only

The format of the corresponding DeviceID property, or the supported device IDs when used to represent a capability. This property is not used.

DynamicMemoryEnabled
Data type: boolean
Access type: Read-only

Indicates whether dynamic memory is enabled for the virtual machine.

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

Windows Server 2008 R2:  Reserved for future use. Note that this behavior has changed with Windows Server 2008 R2 with SP1.

Windows Server 2008:  The DynamicMemoryEnabled property is not available.

ElementName
Data type: string
Access type: Read-only

A user-friendly name for the object. This property is inherited from CIM_SettingData and it is set to "Memory". Changing this property will change the element name of the associated logical device derivative.

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

HostResource
Data type: string array
Access type: Read-only

This property is inherited from CIM_ResourceAllocationSettingData and it is always set to NULL.

InstanceID
Data type: string
Access type: Read-only

For instances associated with a virtual system, this defaults to "Microsoft:GUID\device-specific data". For instances which define potential settings for a virtual system, this defaults to "Microsoft:Definition\GUID\Type", where Type is "Maximum", "Minimum", "Default", or "Increment". This property is inherited from CIM_SettingData.

IsVirtualized
Data type: boolean
Access type: Read-only

Indicates whether this device is virtualized or passed through. When set to False, the underlying or host resource is utilized. At least one item shall be present in the DeviceID property. When set to True, the resource is virtualized and may not map directly to an underlying/host resource. Some implementations may support specific assignment for virtualized resources, in which case the host resource(s) are exposed using the DeviceID property. This property is always set to True.

Limit
Data type: uint64
Access type: Read-only

The maximum amount of memory that may be consumed by the virtual system. For a virtual system with dynamic memory enabled, this represents the maximum memory setting. This property is inherited from CIM_ResourceAllocationSettingData.

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

MappingBehavior
Data type: uint16
Access type: Read-only

Specifies how this resource maps to underlying resources. This property is inherited from CIM_ResourceAllocationSettingData and it is always set to NULL.

OtherResourceType
Data type: string
Access type: Read-only

A string that describes the resource type when a well-defined value is not available and ResourceType has the value "Other". This property is inherited from CIM_ResourceAllocationSettingData and it is always set to NULL.

Parent
Data type: string
Access type: Read-only

The parent of the resource. For example, a controller for the current allocation. This property is inherited from CIM_ResourceAllocationSettingData and it is always set to NULL.

PoolID
Data type: string
Access type: Read-only

The identifier of the resource pool from which this resource was allocated. This property is inherited from CIM_ResourceAllocationSettingData.

Reservation
Data type: uint64
Access type: Read-only

Specifies the amount of memory guaranteed to be available for this VM. For a virtual system with dynamic memory enabled, this represents the minimum memory setting. This property is inherited from CIM_ResourceAllocationSettingData.

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

ResourceSubType
Data type: string
Access type: Read-only

A string that describes an implementation specific sub-type for this resource. For example, this may be used to distinguish different models of the same resource type. This property is inherited from CIM_ResourceAllocationSettingData and it is always set to "Microsoft Virtual Machine Memory".

ResourceType
Data type: uint16
Access type: Read-only

The type of resource that this allocation setting represents. This property is inherited from CIM_ResourceAllocationSettingData and it is always set to 4 (Memory).

TargetMemoryBuffer
Data type: uint32
Access type: Read-only

Defines the amount of extra memory that should be reserved for a virtual machine at runtime, as a percentage of the total memory that the virtual machine is thought to need. This only applies to virtual systems with dynamic memory enabled.

This property can be in the range of 5 to 2000.

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

Windows Server 2008 R2 and Windows Server 2008:  This property is not supported. Note that this behavior has changed with Windows Server 2008 R2 with SP1.

VirtualQuantity
Data type: uint64
Access type: Read-only

The total amount of RAM in the virtual system, as seen by the guest operating system. For a virtual system with dynamic memory enabled, this represents the initial memory available at startup. This property is inherited from CIM_ResourceAllocationSettingData.

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

Weight
Data type: uint32
Access type: Read-only

Defines the memory allocation weighting value for each virtual machine. After all reserves have been met, the remaining memory of the hosting platform will be allocated to virtual systems based on their relative weights (not to exceed the value specified by the Limit property). This property is inherited from CIM_ResourceAllocationSettingData.

Windows Server 2008 R2 with SP1:  This property can be in the range of 0 to 10000.

Windows Server 2008 R2 and Windows Server 2008:  This property can be in the range of 0 to 1000.

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

Remarks

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

Requirements

Minimum supported client

None supported

Minimum supported server

Windows Server 2008

End of client support

None supported

End of server support

Windows Server 2012

Namespace

\\.\Root\Virtualization

MOF

WindowsVirtualization.mof

See also

CIM_ResourceAllocationSettingData
Memory Classes

 

 

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