Win32_MemoryDevice class

Article
01/06/2021

The Win32_MemoryDevice WMI class represents the properties of a computer system memory device and its associated mapped addresses.

The following syntax is simplified from Managed Object Format (MOF) code and includes all of the inherited properties. Properties are listed in alphabetic order, not MOF order.

Syntax

[Dynamic, Provider("CIMWin32"), UUID("{FAF76B9B-798C-11D2-AAD1-006008C78BC7}"), AMENDMENT]
class Win32_MemoryDevice : Win32_SMBIOSMemory
{
  uint16   Access;
  uint8    AdditionalErrorData[];
  uint16   Availability;
  uint64   BlockSize;
  string   Caption;
  uint32   ConfigManagerErrorCode;
  boolean  ConfigManagerUserConfig;
  boolean  CorrectableError;
  string   CreationClassName;
  string   Description;
  string   DeviceID;
  uint64   EndingAddress;
  uint16   ErrorAccess;
  uint64   ErrorAddress;
  boolean  ErrorCleared;
  uint8    ErrorData[];
  uint16   ErrorDataOrder;
  string   ErrorDescription;
  uint16   ErrorGranularity;
  uint16   ErrorInfo;
  string   ErrorMethodology;
  uint64   ErrorResolution;
  datetime ErrorTime;
  uint32   ErrorTransferSize;
  datetime InstallDate;
  uint32   LastErrorCode;
  string   Name;
  uint64   NumberOfBlocks;
  string   OtherErrorDescription;
  string   PNPDeviceID;
  uint16   PowerManagementCapabilities[];
  boolean  PowerManagementSupported;
  string   Purpose;
  uint64   StartingAddress;
  string   Status;
  uint16   StatusInfo;
  string   SystemCreationClassName;
  boolean  SystemLevelAddress;
  string   SystemName;
};

Members

The Win32_MemoryDevice class has these types of members:

Methods
Properties

Methods

The Win32_MemoryDevice class has these methods.

Method	Description
Reset	Not implemented. To implement this method, see the Reset method in Win32_SMBIOSMemory.
SetPowerState	Not implemented. To implement this method, see the SetPowerState method in Win32_SMBIOSMemory.

Properties

The Win32_MemoryDevice class has these properties.

Access

Data type: uint16
Access type: Read-only

Media access available.

This property is inherited from CIM_StorageExtent.

Unknown (0)

Readable (1)

Writeable (2)

Writable

Read/Write Supported (3)

Write Once (4)

AdditionalErrorData

Data type: uint8 array
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|Type 18|32-bit Memory Error Information|Vendor Syndrome"), MAX (64)

Array of additional error information. An example is Error Checking and Correcting (ECC) Syndrome, or the return of the check bits if a cyclical redundancy check (CRC) based error methodology is used. In the latter case, if a single-bit error is recognized and the CRC algorithm is known, it is possible to determine the exact bit that failed. This type of data (ECC Syndrome, Check Bit, Parity Bit data, or other vendor-supplied information) is included in this field. This property is used only when the ErrorInfo property is not equal to 3.

This property is inherited from Win32_SMBIOSMemory.

Availability

Data type: uint16
Access type: Read-only
Qualifiers: MappingStrings ("MIF.DMTF|Operational State|003.5", "MIB.IETF|HOST-RESOURCES-MIB.hrDeviceStatus")

Availability and status of the device.

This property is inherited from CIM_LogicalDevice.

Other (1)

Unknown (2)

Running/Full Power (3)

Running or Full Power

Warning (4)

In Test (5)

Not Applicable (6)

Power Off (7)

Off Line (8)

Off Duty (9)

Degraded (10)

Not Installed (11)

Install Error (12)

Power Save - Unknown (13)

The device is known to be in a power save mode, but its exact status is unknown.

Power Save - Low Power Mode (14)

The device is in a power save state but still functioning, and may exhibit degraded performance.

Power Save - Standby (15)

The device is not functioning, but could be brought to full power quickly.

Power Cycle (16)

Power Save - Warning (17)

The device is in a warning state, though also in a power save mode.

Paused (18)

The device is paused.

Not Ready (19)

The device is not ready.

Not Configured (20)

The device is not configured.

Quiesced (21)

The device is quiet.

BlockSize

Data type: uint64
Access type: Read-only
Qualifiers: MappingStrings ("MIB.IETF|HOST-RESOURCES-MIB.hrStorageAllocationUnits"), Units ("bytes")

Size in bytes of the blocks that form this storage extent. If unknown or if a block concept is not valid (for example, for aggregate extents, memory or logical disks), enter a 1.

This property is inherited from CIM_StorageExtent.

For more information about using uint64 values in scripts, see Scripting in WMI.

Caption

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

Short description of the object a one-line string.

This property is inherited from CIM_ManagedSystemElement.

ConfigManagerErrorCode

Data type: uint32
Access type: Read-only
Qualifiers: Schema ("Win32")

Windows Configuration Manager error code.

This property is inherited from CIM_LogicalDevice.

This device is working properly. (0)

Device is working properly.

This device is not configured correctly. (1)

Device is not configured correctly.

Windows cannot load the driver for this device. (2)

The driver for this device might be corrupted, or your system may be running low on memory or other resources. (3)

Driver for this device might be corrupted, or the system may be low on memory or other resources.

This device is not working properly. One of its drivers or your registry might be corrupted. (4)

Device is not working properly. One of its drivers or the registry might be corrupted.

The driver for this device needs a resource that Windows cannot manage. (5)

Driver for the device requires a resource that Windows cannot manage.

The boot configuration for this device conflicts with other devices. (6)

Boot configuration for the device conflicts with other devices.

Cannot filter. (7)

The driver loader for the device is missing. (8)

Driver loader for the device is missing.

This device is not working properly because the controlling firmware is reporting the resources for the device incorrectly. (9)

Device is not working properly. The controlling firmware is incorrectly reporting the resources for the device.

This device cannot start. (10)

Device cannot start.

This device failed. (11)

Device failed.

This device cannot find enough free resources that it can use. (12)

Device cannot find enough free resources to use.

Windows cannot verify this device's resources. (13)

Windows cannot verify the device's resources.

This device cannot work properly until you restart your computer. (14)

Device cannot work properly until the computer is restarted.

This device is not working properly because there is probably a re-enumeration problem. (15)

Device is not working properly due to a possible re-enumeration problem.

Windows cannot identify all the resources this device uses. (16)

Windows cannot identify all of the resources that the device uses.

This device is asking for an unknown resource type. (17)

Device is requesting an unknown resource type.

Reinstall the drivers for this device. (18)

Device drivers must be reinstalled.

Failure using the VxD loader. (19)

Your registry might be corrupted. (20)

Registry might be corrupted.

System failure: Try changing the driver for this device. If that does not work, see your hardware documentation. Windows is removing this device. (21)

System failure. If changing the device driver is ineffective, see the hardware documentation. Windows is removing the device.

This device is disabled. (22)

Device is disabled.

System failure: Try changing the driver for this device. If that doesn't work, see your hardware documentation. (23)

System failure. If changing the device driver is ineffective, see the hardware documentation.

This device is not present, is not working properly, or does not have all its drivers installed. (24)

Device is not present, not working properly, or does not have all of its drivers installed.

Windows is still setting up this device. (25)

Windows is still setting up the device.

Windows is still setting up this device. (26)

Windows is still setting up the device.

This device does not have valid log configuration. (27)

Device does not have valid log configuration.

The drivers for this device are not installed. (28)

Device drivers are not installed.

This device is disabled because the firmware of the device did not give it the required resources. (29)

Device is disabled. The device firmware did not provide the required resources.

This device is using an Interrupt Request (IRQ) resource that another device is using. (30)

Device is using an IRQ resource that another device is using.

This device is not working properly because Windows cannot load the drivers required for this device. (31)

Device is not working properly. Windows cannot load the required device drivers.

ConfigManagerUserConfig

Data type: boolean
Access type: Read-only
Qualifiers: Schema ("Win32")

If True, the device is using a user-defined configuration.

This property is inherited from CIM_LogicalDevice.

CorrectableError

Data type: boolean
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|Type 18|32-bit Memory Error Information|Error Type")

If True, the most recent error was correctable. This property is not used if ErrorInfo is set to 3.

This property is inherited from Win32_SMBIOSMemory.

CreationClassName

Data type: string
Access type: Read-only
Qualifiers: CIM_Key

Name of the first concrete class to appear in the inheritance chain used in the creation of an instance. When used with the other key properties of the class, the property allows all instances of this class and its subclasses to be uniquely identified.

This property is inherited from CIM_LogicalDevice.

Description

Data type: string
Access type: Read-only
Qualifiers: DisplayName ("Description")

Description of the object.

This property is inherited from CIM_ManagedSystemElement.

DeviceID

Data type: string
Access type: Read-only
Qualifiers: Key, Override ("DeviceId"), MappingStrings ("WMI")

Unique identifier of the memory device.

This property is inherited from CIM_LogicalDevice.

Example: "Memory Device 1"

EndingAddress

Data type: uint64
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|Type 19|Memory Device Mapped Addresses|Ending Address")

Ending address referenced by an application or operating system. This memory address is mapped by a memory controller for this memory object.

This property is inherited from Win32_SMBIOSMemory.

For more information about using uint64 values in scripts, see Scripting in WMI.

ErrorAccess

Data type: uint16
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|Type 18|32-bit Memory Error Information|Error Operation")

Type of memory access operation that caused the last error. This property is valid only when ErrorInfo is not set to 3.

This property is inherited from Win32_SMBIOSMemory.

Other (1)

Unknown (2)

Read (3)

Write (4)

Partial Write (5)

ErrorAddress

Data type: uint64
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|Type 18|32-bit Memory Error Information|Error Address")

Address of the last memory error. This property is used only when ErrorInfo is not set to 3.

This property is inherited from Win32_SMBIOSMemory.

For more information about using uint64 values in scripts, see Scripting in WMI.

ErrorCleared

Data type: boolean
Access type: Read-only

If True, the error reported in LastErrorCode is now cleared.

This property is inherited from CIM_LogicalDevice.

ErrorData

Data type: uint8 array
Access type: Read-only
Qualifiers: ArrayType ("Indexed"), MappingStrings ("SMBIOS"), MAX (64)

Array of data captured from the last memory access with an error. The data occupies the first n octets of the array necessary to hold the number of bits specified by the ErrorTransferSize property. If ErrorTransferSize is 0 (zero), then this property is not used.

This property is inherited from Win32_SMBIOSMemory.

ErrorDataOrder

Data type: uint16
Access type: Read-only
Qualifiers: MappingStrings ("WMI")

Ordering for data stored in the ErrorData property. This property is used only when ErrorTransferSize is 0 (zero).

This property is inherited from Win32_SMBIOSMemory.

Unknown (0)

Least Significant Byte First (1)

Most Significant Byte First (2)

ErrorDescription

Data type: string
Access type: Read-only

More information about the error recorded in LastErrorCode, and information about any corrective actions that may be taken.

This property is inherited from CIM_LogicalDevice.

ErrorGranularity

Data type: uint16
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|Type 18|Error Granularity")

Level where the error can be resolved.

Other (1)

Unknown (2)

Device level (3)

Memory partition level (4)

ErrorInfo

Data type: uint16
Access type: Read-only
Qualifiers: ModelCorrespondence ("CIM_Memory.OtherErrorDescription"), MappingStrings ("SMBIOS|Type 18|32-bit Memory Error Information|Error Type")

Type of error that occurred most recently. The values 12-14, indicating whether an error is correctable, are not used with this property, but this information is found in the CorrectableError property.

This property is inherited from Win32_SMBIOSMemory.

Other (1)

Unknown (2)

OK (3)

Bad Read (4)

Parity Error (5)

Single-Bit Error (6)

Double-Bit Error (7)

Multi-Bit Error (8)

Nibble Error (9)

Checksum Error (10)

CRC Error (11)

Corrected single-bit error (12)

Corrected error (13)

Uncorrectable error (14)

ErrorMethodology

Data type: string
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|Type 16|Physical Memory Array|Memory Error Correction")

Types of error checking used by the memory hardware.

This property is inherited from CIM_StorageExtent.

The values are:

Other ("Other")

Unknown ("Unknown")

Parity ("Parity")

Single-bit ECC ("Single-bit ECC")

Multi-bit ECC ("Multi-bit ECC")

None ("None")

CRC ("CRC")

ErrorResolution

Data type: uint64
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|Type 18|32-bit Memory Error Information|Error Resolution"), Units ("bytes")

Amount of data actually determined to cause the error. This property is unused when the ErrorInfo property is set to 3.

This property is inherited from Win32_SMBIOSMemory.

For more information about using uint64 values in scripts, see Scripting in WMI.

ErrorTime

Data type: datetime
Access type: Read-only
Qualifiers: MappingStrings ("WMI")

Time that the last memory error occurred. This property is valid only when ErrorInfo is not set to 3.

This property is inherited from Win32_SMBIOSMemory.

ErrorTransferSize

Data type: uint32
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS"), Units ("bits")

Size of the data (containing the last error) being transferred. This property is set to 0 (zero) if there is no error.

This property is inherited from Win32_SMBIOSMemory.

InstallDate

Data type: datetime
Access type: Read-only
Qualifiers: MappingStrings ("MIF.DMTF|ComponentID|001.5"), DisplayName ("Install Date")

Date and time the object was installed. This property does not need a value to indicate that the object is installed.

This property is inherited from CIM_ManagedSystemElement.

LastErrorCode

Data type: uint32
Access type: Read-only

Last error code reported by the logical device.

This property is inherited from CIM_LogicalDevice.

Name

Data type: string
Access type: Read-only
Qualifiers: DisplayName ("Name")

Label by which the object is known. When subclassed, the property can be overridden to be a key property.

This property is inherited from CIM_ManagedSystemElement.

NumberOfBlocks

Data type: uint64
Access type: Read-only
Qualifiers: MappingStrings ("MIB.IETF|HOST-RESOURCES-MIB.hrStorageSize")

Total number of consecutive blocks, each block the size of the value contained in the BlockSize property, which form this storage extent. Total size of the storage extent can be calculated by multiplying the value of the BlockSize property by the value of this property. If the value of BlockSize is 1, this property is the total size of the storage extent.

This property is inherited from CIM_StorageExtent.

For more information about using uint64 values in scripts, see Scripting in WMI.

OtherErrorDescription

Data type: string
Access type: Read-only
Qualifiers: ModelCorrespondence ("CIM_Memory.ErrorInfo"), MappingStrings ("SMBIOS")

More information when the ErrorInfo property is set to 1.

This property is inherited from Win32_SMBIOSMemory.

PNPDeviceID

Data type: string
Access type: Read-only
Qualifiers: Schema ("Win32")

Windows Plug and Play device identifier of the logical device.

This property is inherited from CIM_LogicalDevice.

Example: "*PNP030b"

PowerManagementCapabilities

Data type: uint16 array
Access type: Read-only

Array of the specific power-related capabilities of a logical device.

This property is inherited from CIM_LogicalDevice.

Unknown (0)

Not Supported (1)

Disabled (2)

Enabled (3)

The power management features are currently enabled but the exact feature set is unknown or the information is unavailable.

Power Saving Modes Entered Automatically (4)

The device can change its power state based on usage or other criteria.

Power State Settable (5)

The SetPowerState method is supported. This method is found on the parent CIM_LogicalDevice class and can be implemented. For more information, see Designing Managed Object Format (MOF) Classes.

Power Cycling Supported (6)

The SetPowerState method can be invoked with the PowerState parameter set to 5 (Power Cycle).

Timed Power On Supported (7)

Timed Power-On Supported

The SetPowerState method can be invoked with the PowerState parameter set to 5 (Power Cycle) and Time set to a specific date and time, or interval, for power-on.

PowerManagementSupported

Data type: boolean
Access type: Read-only

If True, the device can be power-managed (can be put into suspend mode, and so on). The property does not indicate that power management features are currently enabled, only that the logical device is capable of power management.

This property is inherited from CIM_LogicalDevice.

Purpose

Data type: string
Access type: Read-only

Free-form string describing the media and its use.

This property is inherited from CIM_StorageExtent.

StartingAddress

Data type: uint64
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|Type 19|Memory Device Mapped Addresses|Starting Address")

Beginning address referenced by an application or the operating system. This memory address is mapped by a memory controller for this memory object.

This property is inherited from Win32_SMBIOSMemory.

For more information about using uint64 values in scripts, see Scripting in WMI.

Status

Data type: string
Access type: Read-only
Qualifiers: MaxLen (10), DisplayName ("Status")

Current status of the object. Various operational and nonoperational statuses can be defined. Operational statuses include: "OK", "Degraded", and "Pred Fail" (an element, such as a SMART-enabled hard disk drive, may be functioning properly but predicting a failure in the near future). Nonoperational statuses include: "Error", "Starting", "Stopping", and "Service". The latter, "Service", could apply during mirror-resilvering of a disk, reload of a user permissions list, or other administrative work. Not all such work is online, yet the managed element is neither "OK" nor in one of the other states.

This property is inherited from CIM_ManagedSystemElement.

Values include the following:

OK ("OK")

Error ("Error")

Degraded ("Degraded")

Unknown ("Unknown")

Pred Fail ("Pred Fail")

Starting ("Starting")

Stopping ("Stopping")

Service ("Service")

Stressed ("Stressed")

NonRecover ("NonRecover")

No Contact ("No Contact")

Lost Comm ("Lost Comm")

StatusInfo

Data type: uint16
Access type: Read-only
Qualifiers: MappingStrings ("MIF.DMTF|Operational State|003.3")

State of the logical device. If this property does not apply to the logical device, the value 5 (Not Applicable) should be used.

This property is inherited from CIM_LogicalDevice.

Other (1)

Unknown (2)

Enabled (3)

Disabled (4)

Not Applicable (5)

SystemCreationClassName

Data type: string
Access type: Read-only
Qualifiers: Propagated ("CIM_System.CreationClassName"), CIM_Key

Value of the scoping computer's CreationClassName property.

This property is inherited from CIM_LogicalDevice.

SystemLevelAddress

Data type: boolean
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|Type 18|32-bit Memory Error Information|Error Address")

If True, the address information in the ErrorAddress property is a system-level address. If FALSE, it is a physical address. This property is used only when ErrorInfo is not set to 3.

This property is inherited from Win32_SMBIOSMemory.

SystemName

Data type: string
Access type: Read-only
Qualifiers: Propagated ("CIM_System.Name"), CIM_Key

Name of the scoping system.

This property is inherited from CIM_LogicalDevice.

Remarks

The Win32_MemoryDevice class is derived from Win32_SMBIOSMemory.

Requirements

Requirement	Value
Minimum supported client	Windows Vista
Minimum supported server	Windows Server 2008
Namespace	Root\CIMV2
MOF	CIMWin32.mof
DLL	CIMWin32.dll

Share via

Win32_MemoryDevice class

Syntax

Members

Methods

Properties

Remarks

Requirements

See also

Feedback

Additional resources