CIM_MediaAccessDevice class (CIMWin32 WMI Providers)
The CIM_MediaAccessDevice class represents the ability to access one or more media, and then use the media to store and retrieve data.
Important
The DMTF (Distributed Management Task Force) CIM (Common Information Model) classes are the parent classes upon which WMI classes are built. WMI currently supports only the CIM 2.x version schemas.
The following syntax is simplified from Managed Object Format (MOF) code and includes all inherited properties. Properties are listed in alphabetic order, not MOF order.
Syntax
[Abstract, UUID("{8502C52A-5FBB-11D2-AAC1-006008C78BC7}"), AMENDMENT]
class CIM_MediaAccessDevice : CIM_LogicalDevice
{
string Caption;
string Description;
datetime InstallDate;
string Name;
string Status;
uint16 Availability;
uint32 ConfigManagerErrorCode;
boolean ConfigManagerUserConfig;
string CreationClassName;
string DeviceID;
uint16 PowerManagementCapabilities[];
boolean ErrorCleared;
string ErrorDescription;
uint32 LastErrorCode;
string PNPDeviceID;
boolean PowerManagementSupported;
uint16 StatusInfo;
string SystemCreationClassName;
string SystemName;
uint16 Capabilities[];
string CapabilityDescriptions[];
string CompressionMethod;
uint64 DefaultBlockSize;
string ErrorMethodology;
uint64 MaxBlockSize;
uint64 MaxMediaSize;
uint64 MinBlockSize;
boolean NeedsCleaning;
uint32 NumberOfMediaSupported;
};
Members
The CIM_MediaAccessDevice class has these types of members:
Methods
The CIM_MediaAccessDevice class has these methods.
| Method | Description |
|---|---|
| Reset | Requests a reset of the logical device. Not implemented by WMI. |
| SetPowerState | Defines the desired power state for a logical device and when a device should be put into that state. Not implemented by WMI. |
Properties
The CIM_MediaAccessDevice class has these properties.
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Availability
-
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Data type: uint16
-
Access type: Read-only
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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.
-
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Other (1)
-
Unknown (2)
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Running/Full Power (3)
-
Warning (4)
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In Test (5)
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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.
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Not Ready (19)
-
The device is not ready.
-
Not Configured (20)
-
The device is not configured.
-
Quiesced (21)
-
The device is quiet.
Capabilities
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Data type: uint16 array
-
Access type: Read-only
-
Qualifiers: ArrayType ("Indexed"), MappingStrings ("MIF.DMTF|Storage Devices|001.9", "MIF.DMTF|Storage Devices|001.11", "MIF.DMTF|Storage Devices|001.12", "MIF.DMTF|Disks|003.7"), ModelCorrespondence ("CIM_MediaAccessDevice.CapabilityDescriptions")
Capabilities of the media access device.
Unknown (0)
Unknown.
Other (1)
Other.
Sequential Access (2)
Sequential access.
Random Access (3)
Random access.
Supports Writing (4)
Writing.
Encryption (5)
Encryption.
Compression (6)
Compression.
Supports Removeable Media (7)
Removable media.
Manual Cleaning (8)
Manual cleaning.
Automatic Cleaning (9)
Automatic cleaning.
SMART Notification (10)
SMART notification.
Supports Dual Sided Media (11)
Dual-sided media.
Distinguishes a device that can access both sides of dual-sided media from a device that reads only a single side and requires the media to be turned over.
Predismount Eject Not Required (12)
Indicates that the media does not have to be explicitly ejected from the device before being accessed by a picker element.
CapabilityDescriptions
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Data type: string array
-
Access type: Read-only
-
Qualifiers: ArrayType ("Indexed"), ModelCorrespondence ("CIM_MediaAccessDevice.Capabilities")
Array of free-form strings that provides detailed explanations for access device features indicated in the Capabilities array.
Note
Each entry of this array is related to the entry in the Capabilities array, located at the same index.
Caption
-
Data type: string
-
Access type: Read-only
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Qualifiers: MaxLen (64), DisplayName ("Caption")
A short textual description of the object.
This property is inherited from CIM_ManagedSystemElement.
CompressionMethod
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Data type: string
-
Access type: Read-only
Free-form string that indicates the algorithm or tool used to compress the logical file. If it is not possible to describe the compression scheme (because it is unknown), use the following:If , use "Unknown". If , use "Compressed". , use "Not Compressed".
"Unknown"
The compression scheme is unknown or not described.
"Compressed"
The logical file is compressed, but the compression scheme is unknown or not described
"Not Compressed"
If the logical file is not compressed
ConfigManagerErrorCode
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Data type: uint32
-
Access type: Read-only
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Qualifiers: Schema ("Win32")
Win32 Configuration Manager error code.
This property is inherited from CIM_LogicalDevice.
This device is working properly. (0)
This device is not configured correctly. (1)
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)
This device is not working properly. One of its drivers or your registry might be corrupted. (4)
The driver for this device needs a resource that Windows cannot manage. (5)
The boot configuration for this device conflicts with other devices. (6)
Cannot filter. (7)
The driver loader for the device is missing. (8)
This device is not working properly because the controlling firmware is reporting the resources for the device incorrectly. (9)
This device cannot start. (10)
This device failed. (11)
This device cannot find enough free resources that it can use. (12)
Windows cannot verify this device's resources. (13)
This device cannot work properly until you restart your computer. (14)
This device is not working properly because there is probably a re-enumeration problem. (15)
Windows cannot identify all the resources this device uses. (16)
This device is asking for an unknown resource type. (17)
Reinstall the drivers for this device. (18)
Failure using the VxD loader. (19)
Your registry might be corrupted. (20)
System failure: Try changing the driver for this device. If that does not work, see your hardware documentation. Windows is removing this device. (21)
This device is disabled. (22)
System failure: Try changing the driver for this device. If that doesn't work, see your hardware documentation. (23)
This device is not present, is not working properly, or does not have all its drivers installed. (24)
Windows is still setting up this device. (25)
Windows is still setting up this device. (26)
This device does not have valid log configuration. (27)
The drivers for this device are not installed. (28)
This device is disabled because the firmware of the device did not give it the required resources. (29)
This device is using an Interrupt Request (IRQ) resource that another device is using. (30)
This device is not working properly because Windows cannot load the drivers required for this device. (31)
ConfigManagerUserConfig
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Data type: boolean
-
Access type: Read-only
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Qualifiers: Schema ("Win32")
If TRUE, the device is using a user-defined configuration.
This property is inherited from CIM_LogicalDevice.
CreationClassName
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Data type: string
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Access type: Read-only
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Qualifiers: CIM_Key
Name of the class or subclass used in the creation of an instance. When used with other key properties of the class, this property allows all instances of the class and its subclasses to be uniquely identified.
This property is inherited from CIM_LogicalDevice.
DefaultBlockSize
-
Data type: uint64
-
Access type: Read-only
-
Qualifiers: Units ("bytes")
Default block size, in bytes, for the device.
For more information about using uint64 values in scripts, see Scripting in WMI.
Description
-
Data type: string
-
Access type: Read-only
-
Qualifiers: DisplayName ("Description")
A textual description of the object.
This property is inherited from CIM_ManagedSystemElement.
DeviceID
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Data type: string
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Access type: Read-only
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Qualifiers: CIM_Key
Address or other identifying information to uniquely name the logical device.
This property is inherited from CIM_LogicalDevice.
ErrorCleared
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Data type: boolean
-
Access type: Read-only
If TRUE, the error reported in the LastErrorCode property is now cleared.
This property is inherited from CIM_LogicalDevice.
ErrorDescription
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Data type: string
-
Access type: Read-only
Free-form string that supplies information about the error recorded in the LastErrorCode property and corrective actions to perform.
This property is inherited from CIM_LogicalDevice.
ErrorMethodology
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Data type: string
-
Access type: Read-only
Free-form string that describes the types of error detection and correction supported by the device.
InstallDate
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Data type: datetime
-
Access type: Read-only
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Qualifiers: MappingStrings ("MIF.DMTF|ComponentID|001.5"), DisplayName ("Install Date")
Indicates when the object was installed. Lack of a value does not indicate that the object is not installed.
This property is inherited from CIM_ManagedSystemElement.
LastErrorCode
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Data type: uint32
-
Access type: Read-only
Last error code reported by the logical device.
This property is inherited from CIM_LogicalDevice.
MaxBlockSize
-
Data type: uint64
-
Access type: Read-only
-
Qualifiers: Units ("bytes")
Maximum block size, in bytes, for media accessed by the device.
For more information about using uint64 values in scripts, see Scripting in WMI.
MaxMediaSize
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Data type: uint64
-
Access type: Read-only
-
Qualifiers: MappingStrings ("MIF.DMTF|Sequential Access Devices|001.2"), Units ("kilobytes")
Maximum size, in kilobytes, of media supported by this device. Kilobytes are interpreted as the number of bytes multiplied by 1000 (not the number of bytes multiplied by 1024).
For more information about using uint64 values in scripts, see Scripting in WMI.
MinBlockSize
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Data type: uint64
-
Access type: Read-only
-
Qualifiers: Units ("bytes")
Minimum block size, in bytes, for media accessed by the device.
For more information about using uint64 values in scripts, see Scripting in WMI.
Name
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Data type: string
-
Access type: Read-only
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Qualifiers: DisplayName ("Name")
Label by which the object is known. When subclassed, this property can be overridden to be a key property.
This property is inherited from CIM_ManagedSystemElement.
NeedsCleaning
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Data type: boolean
-
Access type: Read-only
If TRUE, the media access device needs cleaning. Whether manual or automatic cleaning is possible is indicated in the Capabilities array property.
NumberOfMediaSupported
-
Data type: uint32
-
Access type: Read-only
Maximum number of multiple individual media that can be supported or inserted.
PNPDeviceID
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Data type: string
-
Access type: Read-only
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Qualifiers: Schema ("Win32")
Indicates the Win32 Plug and Play device identifier of the logical device.
Example: "*PNP030b"
This property is inherited from CIM_LogicalDevice.
PowerManagementCapabilities
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Data type: uint16 array
-
Access type: Read-only
Indicates the specific power-related capabilities of the logical device.
This property is inherited from CIM_LogicalDevice.
Unknown (0)
The power-related capacities are unknown.
Not Supported (1)
Power-related capacities are not supported for this device.
Disabled (2)
Power-related capacities have been disabled.
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)
The SetPowerState method can be invoked with the PowerState parameter set to 5 ("Power Cycle") and the Time parameter set to a specific date and time, or interval, for power-on.
PowerManagementSupported
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Data type: boolean
-
Access type: Read-only
If TRUE, the device can be power managed, that is, put into a power-save state. If FALSE, the integer value 1 ("Not Supported") should be the only entry in the PowerManagementCapabilities array.
This property does not indicate whether power management features are currently enabled, or if enabled, which features are supported. For more information, see the PowerManagementCapabilities array.
This property is inherited from CIM_LogicalDevice.
Status
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Data type: string
-
Access type: Read-only
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Qualifiers: MaxLen (10), DisplayName ("Status")
String that indicates the current status of the object. Operational and non-operational status can be defined. Operational status can include "OK", "Degraded", and "Pred Fail". "Pred Fail" indicates that an element is functioning properly, but is predicting a failure (for example, a SMART-enabled hard disk drive).
Non-operational status can include "Error", "Starting", "Stopping", and "Service". "Service" can apply during disk mirror-resilvering, reloading a user permissions list, or other administrative work. Not all such work is online, but 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
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Data type: uint16
-
Access type: Read-only
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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
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Data type: string
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Access type: Read-only
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Qualifiers: Propagated ("CIM_System.CreationClassName"), CIM_Key
The scoping system's creation class name.
This property is inherited from CIM_LogicalDevice.
SystemName
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Data type: string
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Access type: Read-only
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Qualifiers: Propagated ("CIM_System.Name"), CIM_Key
The scoping system's name.
This property is inherited from CIM_LogicalDevice.
Remarks
The CIM_MediaAccessDevice class is derived from CIM_LogicalDevice.
WMI does not implement this class. For classes derived from CIM_MediaAccessDevice, see Win32 Classes.
This documentation is derived from the CIM class descriptions published by the DMTF. Microsoft may have made changes to correct minor errors, conform to Microsoft SDK documentation standards, or provide more information.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows Vista |
| Minimum supported server |
Windows Server 2008 |
| Namespace |
Root\CIMV2 |
| MOF |
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| DLL |
|