Win32_PhysicalMemoryArray class

Article
01/06/2021

The Win32_PhysicalMemoryArray WMI class represents details about the computer system physical memory. This includes the number of memory devices, memory capacity available, and memory type—for example, system or video memory.

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

Syntax

[Dynamic, Provider("CIMWin32"), UUID("{FAF76B99-798C-11D2-AAD1-006008C78BC7}"), AMENDMENT]
class Win32_PhysicalMemoryArray : CIM_PhysicalPackage
{
  string   Caption;
  string   CreationClassName;
  real32   Depth;
  string   Description;
  real32   Height;
  boolean  HotSwappable;
  datetime InstallDate;
  uint16   Location;
  string   Manufacturer;
  uint32   MaxCapacity;
  uint64   MaxCapacityEx;
  uint16   MemoryDevices;
  uint16   MemoryErrorCorrection;
  string   Model;
  string   Name;
  string   OtherIdentifyingInfo;
  string   PartNumber;
  boolean  PoweredOn;
  boolean  Removable;
  boolean  Replaceable;
  string   SerialNumber;
  string   SKU;
  string   Status;
  string   Tag;
  uint16   Use;
  string   Version;
  real32   Weight;
  real32   Width;
};

Members

The Win32_PhysicalMemoryArray class has these types of members:

Methods
Properties

Methods

The Win32_PhysicalMemoryArray class has these methods.

Method	Description
IsCompatible	Not implemented.

Properties

The Win32_PhysicalMemoryArray class has these properties.

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.

CreationClassName

Data type: string
Access type: Read-only
Qualifiers: CIM_Key, MaxLen (256)

Name of the first concrete class that appears 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 identified uniquely.

This property is inherited from CIM_PhysicalElement.

Depth

Data type: real32
Access type: Read-only
Qualifiers: Units ("inches")

Depth of the physical package—in inches.

This property is inherited from CIM_PhysicalPackage.

Description

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

Description of the object.

This property is inherited from CIM_ManagedSystemElement.

Height

Data type: real32
Access type: Read-only
Qualifiers: Units ("inches")

Height of the physical package—in inches.

This property is inherited from CIM_PhysicalPackage.

HotSwappable

Data type: boolean
Access type: Read-only

If TRUE, a physical package can be hot-swapped (if it is possible to replace the element with a physically different but equivalent one while the containing package has power applied to it, is "on"). For example, a disk drive package inserted using SCA connectors is removable and can be hot-swapped. All packages that can be hot-swapped are inherently removable and replaceable.

This property is inherited from CIM_PhysicalPackage.

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.

Location

Data type: uint16
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|Type 16|Location")

Physical location of the memory array.

This value comes from the Location member of the Physical Memory Array structure in the SMBIOS information.

Reserved (0)

Other (1)

Unknown (2)

System board or motherboard (3)

ISA add-on card (4)

EISA add-on card (5)

PCI add-on card (6)

MCA add-on card (7)

PCMCIA add-on card (8)

Proprietary add-on card (9)

NuBus (10)

PC-98/C20 add-on card (11)

PC-98/C24 add-on card (12)

PC-98/E add-on card (13)

PC-98/Local bus add-on card (14)

Manufacturer

Data type: string
Access type: Read-only
Qualifiers: MaxLen (256)

Name of the organization responsible for producing the physical element.

This property is inherited from CIM_PhysicalElement.

MaxCapacity

Data type: uint32
Access type: Read-only
Qualifiers: DEPRECATED, MappingStrings ("SMBIOS|Type 16|Maximum Capacity")

Use the MaxCapacityEx property instead.

This value comes from the Maximum Capacity member of the Physical Memory Array structure in the SMBIOS information.

Windows Server 2012 R2, Windows 8.1, Windows Server 2012, Windows 8, Windows Server 2008 R2, Windows 7, Windows Server 2008 and Windows Vista: Maximum memory size (in bytes) installable for this particular memory array. If the size is unknown, the property is given a value of 0 (zero).

MaxCapacityEx

Data type: uint64
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|Type 16|Extended Maximum Capacity"), Units ("kilobytes")

Maximum memory size (in kilobytes) installable for this particular memory array. If the size is unknown, the property is given a value of 0 (zero).

This value comes from the Extended Maximum Capacity member of the Physical Memory Array structure in the SMBIOS information.

Windows Server 2012 R2, Windows 8.1, Windows Server 2012, Windows 8, Windows Server 2008 R2, Windows 7, Windows Server 2008 and Windows Vista: This property is not supported.

MemoryDevices

Data type: uint16
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|Type 16|Number of Memory Devices")

Number of physical slots or sockets available in this memory array.

This value comes from the Number of Memory Devices member of the Physical Memory Array structure in the SMBIOS information.

MemoryErrorCorrection

Data type: uint16
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|Type 16|Memory Error Correction")

Type of error correction used by the memory array.

This value comes from the Memory Error Correction member of the Physical Memory Array structure in the SMBIOS information.

Reserved (0)

Other (1)

Unknown (2)

None (3)

Parity (4)

Single-bit ECC (5)

Multi-bit ECC (6)

CRC (7)

Model

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

Name by which the physical element is generally known.

This property is inherited from CIM_PhysicalElement.

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.

OtherIdentifyingInfo

Data type: string
Access type: Read-only

Additional data, beyond asset tag information, that could be used to identify a physical element. One example is bar code data associated with an element that also has an asset tag. Note that if only bar code data is available and is unique or able to be used as an element key, this property would be NULL and the bar code data used as the class key, in the tag property.

This property is inherited from CIM_PhysicalElement.

PartNumber

Data type: string
Access type: Read-only
Qualifiers: MaxLen (256)

Part number assigned by the organization responsible for producing or manufacturing the physical element.

This property is inherited from CIM_PhysicalElement.

PoweredOn

Data type: boolean
Access type: Read-only

If TRUE, the physical element is powered on.

This property is inherited from CIM_PhysicalElement.

Removable

Data type: boolean
Access type: Read-only

If TRUE, a physical package is removable (if it is designed to be taken in and out of the physical container in which it is normally found, without impairing the function of the overall packaging). A package can still be removable if power must be "off" to perform the removal. If power can be "on" and the package removed, then the element is removable and can be hot-swapped. For example, an extra battery in a laptop is removable, as is a disk drive package inserted using SCA connectors. However, the latter can be hot-swapped. A laptop's display is not removable, nor is a nonredundant power supply. Removing these components would affect the function of the overall packaging or is impossible due to the tight integration of the package.

This property is inherited from CIM_PhysicalPackage.

Replaceable

Data type: boolean
Access type: Read-only

If TRUE, this physical media component can be replaced with a physically different one. For example, some computer systems allow the main processor chip to be upgraded to one of a higher clock rating. In this case, the processor is said to be replaceable. Another example is a power supply package mounted on sliding rails. All removable packages are inherently replaceable.

This property is inherited from CIM_PhysicalPackage.

SerialNumber

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

Manufacturer-allocated number used to identify the physical element.

This property is inherited from CIM_PhysicalElement.

SKU

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

Stockkeeping unit number for the physical element.

This property is inherited from CIM_PhysicalElement.

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")

Tag

Data type: string
Access type: Read-only
Qualifiers: Key, MaxLen (256), Override ("Tag"), MappingStrings ("WMI")

Unique identifier of the physical memory array.

This property is inherited from CIM_PhysicalElement.

Example: "Physical Memory Array 1"

Use

Data type: uint16
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|Type 16|Use")

How memory is used in the computer system.

This value comes from the Use member of the Physical Memory Array structure in the SMBIOS information.

Reserved (0)

Other (1)

Unknown (2)

System memory (3)

Video memory (4)

Flash memory (5)

Non-volatile RAM (6)

Nonvolatile RAM

Cache memory (7)

Version

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

Version of the physical element.

This property is inherited from CIM_PhysicalElement.

Weight

Data type: real32
Access type: Read-only
Qualifiers: Units ("pounds")

Weight of the physical package in pounds.

This property is inherited from CIM_PhysicalPackage.

Width

Data type: real32
Access type: Read-only
Qualifiers: Units ("inches")

Width of the physical package in inches.

This property is inherited from CIM_PhysicalPackage.

Remarks

The Win32_PhysicalMemoryArray class is derived from CIM_PhysicalPackage.

Examples

The following PowerShell sample retrieves the number of memory slots and the amount of memory installed on a target computer.

$strComputer = Read-Host "Enter Computer Name"
 $colSlots = Get-WmiObject -Class "win32_PhysicalMemoryArray" -namespace "root\CIMV2" `
 -computerName $strComputer
 $colRAM = Get-WmiObject -Class "win32_PhysicalMemory" -namespace "root\CIMV2" `
 -computerName $strComputer

Foreach ($objSlot In $colSlots){
      "Total Number of DIMM Slots: " + $objSlot.MemoryDevices
 }
 Foreach ($objRAM In $colRAM) {
      "Memory Installed: " + $objRAM.DeviceLocator
      "Memory Size: " + ($objRAM.Capacity / 1GB) + " GB"
 }

The following VBScript code sample returns information about the physical memory installed on a computer.

On Error Resume Next 
 
strComputer = "." 
Set objWMIService = GetObject("winmgmts:" _ 
    & "{impersonationLevel=impersonate}!\\" & strComputer & "\root\cimv2") 
 
Set colItems = objWMIService.ExecQuery _ 
    ("Select * from Win32_PhysicalMemoryArray") 
 
For Each objItem in colItems 
    Wscript.Echo "Description: " & objItem.Description 
    Wscript.Echo "Maximum Capacity: " & objItem.MaxCapacity 
    Wscript.Echo "Memory Devices: " & objItem.MemoryDevices 
    Wscript.Echo "Memory Error Correction: " & objItem.MemoryErrorCorrection 
Next

Requirements

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

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Win32_PhysicalMemoryArray class

Syntax

Members

Methods

Properties

Remarks

Examples

Requirements

See also

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