Msvm_ControlledBy class
Associates a storage device with the storage controller that owns the device. This association is used with both IDE and floppy controllers.
The following syntax is simplified Managed Object Format (MOF) code, and it includes all of the inherited properties.
Syntax
[Association, Dynamic, Provider("VmmsWmiInstanceAndMethodProvider"), AMENDMENT]
class Msvm_ControlledBy : CIM_ControlledBy
{
uint64 NegotiatedSpeed;
uint32 NegotiatedDataWidth;
CIM_Controller REF Antecedent;
CIM_LogicalDevice REF Dependent;
uint16 AccessState;
datetime TimeOfDeviceReset;
uint32 NumberOfHardResets;
uint32 NumberOfSoftResets;
string DeviceNumber;
uint16 AccessMode;
uint16 AccessPriority;
};
Members
The Msvm_ControlledBy class has these types of members:
Properties
The Msvm_ControlledBy class has these properties.
-
AccessMode
-
-
Data type: uint16
-
Access type: Read-only
This property that describes the accessibility of the device through the controller.
This property is inherited from CIM_ControlledBy.
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-
ReadWrite (2)
-
ReadOnly (3)
-
NoAccess (4)
AccessPriority
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Data type: uint16
-
Access type: Read-only
The priority for access of the device through the controller. A lower value indicates a higher priority.
This property is inherited from CIM_ControlledBy.
AccessState
-
Data type: uint16
-
Access type: Read-only
Indicates whether the controller is actively managing the device.
This property is always set to 1.
This property is inherited from CIM_ControlledBy.
Unknown (0)
Active (1)
Inactive (2)
Antecedent
-
Data type: CIM_Controller
-
Access type: Read-only
The controller.
This property is inherited from CIM_ControlledBy.
Dependent
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Data type: CIM_LogicalDevice
-
Access type: Read-only
The logical devices.
This property is inherited from CIM_ControlledBy.
DeviceNumber
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Data type: string
-
Access type: Read-only
The address of the associated device in the context of the controller.
This property is inherited from CIM_ControlledBy.
NegotiatedDataWidth
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Data type: uint32
-
Access type: Read-only
-
Qualifiers: Units ("Bits"), MappingStrings ("MIF.DMTF|Bus Port Association|001.3")
When several bus and connection data widths are possible, the NegotiatedDataWidth property defines the one that is in use between the Devices. Data width is specified in bits. If data width is not negotiated, or if this information is not available or not important to Device management, the property should be set to 0.
This property is always set to 0.
This property is inherited from CIM_DeviceConnection.
NegotiatedSpeed
-
Data type: uint64
-
Access type: Read-only
-
Qualifiers: Units ("Bits per Second"), MappingStrings ("MIF.DMTF|Bus Port Association|001.2")
When several bus and connection speeds are possible, this property defines the speed that is in use between the devices, in bits per second. If connection or bus speeds are not negotiated, or if this information is not available, or not important to device management, the property should be set to "0".
This property is always set to 0.
This property is inherited from CIM_DeviceConnection.
NumberOfHardResets
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Data type: uint32
-
Access type: Read-only
-
Qualifiers: Counter
The number of hard resets issued by the controller. A hard reset returns a device to its initialization or boot-up state, after which all internal device state information and data are lost.
This property is inherited from CIM_ControlledBy.
NumberOfSoftResets
-
Data type: uint32
-
Access type: Read-only
-
Qualifiers: Counter
The number of soft resets issued by the controller. A soft reset does not clear the device state or data.
This property is inherited from CIM_ControlledBy.
TimeOfDeviceReset
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Data type: datetime
-
Access type: Read-only
The time when the downstream device was last reset by the controller.
This property is inherited from CIM_ControlledBy.
Remarks
Access to the Msvm_ControlledBy 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 R2 |
| Namespace |
Root\Virtualization |
| MOF |
|