Key |
CreationClassName
|
string
|
|
CreationClassName indicates the name of the class or the subclass used in the creation of an instance. When used with the other key properties of this class, this property allows all instances of this class and its subclasses to be uniquely identified. |
DeviceID
|
string
|
|
The ID of the BackendVolume. A numerical value which is unique inside the BackendVolume class only. |
SystemCreationClassName
|
string
|
|
The CreationClassName of the scoping system. |
SystemName
|
string
|
|
The System Name of the scoping system. |
Read Only |
Access
|
uint16
|
Unknown | 0 |
Readable | 1 |
Writeable | 2 |
Read/Write Supported | 3 |
Write Once | 4 |
|
Access describes whether the media is readable (value=1), writeable (value=2), or both (value=3)."Unknown"(0) and"Write Once"(4) can also be defined. |
ActiveWWPN
|
string
|
|
The name of the volume's active WWPN. |
AdditionalAvailability
|
uint16
|
Other | 1 |
Unknown | 2 |
Running/Full Power | 3 |
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 |
Power Save - Low Power Mode | 14 |
Power Save - Standby | 15 |
Power Cycle | 16 |
Power Save - Warning | 17 |
Paused | 18 |
Not Ready | 19 |
Not Configured | 20 |
Quiesced | 21 |
|
Additional availability and status of the Device in addition to that specified in the Availability property. The Availability property denotes the primary status and availability of the Device. In some cases, this property will not be sufficient to denote the complete status of the Device. In those cases, the AdditionalAvailability property can be used to provide further information. For example, the primary Availability of a device might be"Off line"(value=8) or in a low-power state (AdditionalAvailability value=14), or the Device could be running Diagnostics (AdditionalAvailability value=5,"In Test"). |
BlockSize
|
uint64
|
|
Size in bytes of the blocks which form this StorageExtent. If variable block size, then the maximum block size in bytes should be specified. If the block size is unknown or if a block concept is not valid (for example, for AggregateExtents, Memory or LogicalDisks), enter a 1. |
Capacity
|
uint64
|
|
The total capacity of the BackendVolume. |
ConsumableBlocks
|
uint64
|
|
The maximum number of blocks, of size BlockSize, which are available for consumption when layering StorageExtents using the BasedOn association. This property only has meaning when this StorageExtent is an Antecedent reference in a BasedOn relationship. For example, a StorageExtent could be composed of 120 blocks. However, the Extent itself may use 20 blocks for redundancy data. If another StorageExtent is BasedOn this Extent, only 100 blocks would be available to it. This information ('100 blocks is available for consumption') is indicated in the ConsumableBlocks property. |
ControllerName
|
string
|
|
The name of the volume's back-end controller. |
DataOrganization
|
uint16
|
Other | 0 |
Unknown | 1 |
Fixed Block | 2 |
Variable Block | 3 |
Count Key Data | 4 |
|
Type of data organization used. |
DataRedundancy
|
uint16
|
|
Number of complete copies of data currently maintained. |
DeltaReservation
|
uint8
|
|
Current value for Delta reservation. This is a percentage that specifies the amount of space that should be reserved in a replica for caching changes. |
Description
|
string
|
|
The Description property provides a textual description of the object. |
EnabledDefault
|
uint16
|
Enabled | 2 |
Disabled | 3 |
Not Applicable | 5 |
Enabled but Offline | 6 |
No Default | 7 |
DMTF Reserved | 8..32767 |
Vendor Reserved | 32768..65535 |
|
An enumerated value indicating an administrator's default or startup configuration for the Enabled State of an element. By default, the element is"Enabled"(value=2). |
EnabledState
|
uint16
|
Unknown | 0 |
Other | 1 |
Enabled | 2 |
Disabled | 3 |
Shutting Down | 4 |
Not Applicable | 5 |
Enabled but Offline | 6 |
In Test | 7 |
Deferred | 8 |
Quiesce | 9 |
Starting | 10 |
DMTF Reserved | 11..32767 |
Vendor Reserved | 32768..65535 |
|
EnabledState is an integer enumeration that indicates the enabled and disabled states of an element. It can also indicate the transitions between these requested states. For example, shutting down (value=4) and starting (value=10) are transient states between enabled and disabled. The following text briefly summarizes the various enabled and disabled states:Enabled (2) indicates that the element is or could be running commands, will process any queued commands, and queues new requests.Disabled (3) indicates that the element will not run commands and will drop any new requests.Shutting Down (4) indicates that the element is in the process of going to a Disabled state.Not Applicable (5) indicates the element does not support being enabled or disabled.Enabled but Offline (6) indicates that the element might be completing commands, and will drop any new requests.Test (7) indicates that the element is in a test state.Deferred (8) indicates that the element might be completing commands, but will queue any new requests.Quiesce (9) indicates that the element is enabled but in a restricted mode. The behavior of the element is similar to the Enabled state, but it processes only a restricted set of commands. All other requests are queued.Starting (10) indicates that the element is in the process of going to an Enabled state. New requests are queued. |
ErrorMethodology
|
string
|
|
ErrorMethodology is a free-form string describing the type of error detection and correction supported by this StorageExtent. |
ExtentStatus
|
uint16
|
Other | 0 |
Unknown | 1 |
None/Not Applicable | 2 |
Broken | 3 |
Data Lost | 4 |
Dynamic Reconfig | 5 |
Exposed | 6 |
Fractionally Exposed | 7 |
Partially Exposed | 8 |
Protection Disabled | 9 |
Readying | 10 |
Rebuild | 11 |
Recalculate | 12 |
Spare in Use | 13 |
Verify In Progress | 14 |
In-Band Access Granted | 15 |
Imported | 16 |
Exported | 17 |
DMTF Reserved | 18..32767 |
Vendor Reserved | 32768..65535 |
|
StorageExtents have additional status information beyond that captured in the OperationalStatus and other properties, inherited from ManagedSystemElement. This additional information (for example,"Protection Disabled", value=9) is captured in the ExtentStatus property.'In-Band Access Granted'says that access to data on an extent is granted to some consumer and is only valid when'Exported'is also set. It is set as a side effect of PrivilegeManagementService.ChangeAccess or equivalent interfaces.'Imported'indicates that the extent is used in the current system, but known to be managed by some other system. For example, a server imports volumes from a disk array.'Exported'indicates the extent is meant to be used by some comsumer. A disk array's logical units are exported.Intermediate composite extents may be neither imported nor exported. |
IdentifyingDescriptions
|
string
|
|
An array of free-form strings providing explanations and details behind the entries in the OtherIdentifyingInfo array. Each entry of this array is related to the entry in OtherIdentifyingInfo that is located at the same index. |
IsBasedOnUnderlyingRedundancy
|
boolean
|
|
True indicates that the underlying StorageExtent(s) participate in a StorageRedundancyGroup. |
MaxPathCount
|
uint32
|
|
The maximum FC path count to the BackendVolume. |
Mode
|
uint32
|
Unmanaged | 0 |
Router restricted | 1 |
Managed | 2 |
Image | 3 |
for future use | 4 |
for future use | 5 |
Router config | 6 |
Remote copy | 7 |
for future use | 8 |
|
The mode of the BackendVolume. |
Name
|
string
|
|
The label by which the object is known. |
NativeStatus
|
uint16
|
Offline | 0 |
Online | 1 |
Degraded | 2 |
Excluded | 3 |
|
The back-end volume's native operational status. Can be either0 ("Offline"),1 ("Online",2 ("Degraded"or3 ("Excluded") |
NoSinglePointOfFailure
|
boolean
|
|
Indicates whether or not there exists no single point of failure. |
NumberOfBlocks
|
uint64
|
|
The maximum number of blocks, of size BlockSize, which are available for consumption when layering StorageExtents using the BasedOn association. This property only has meaning when this StorageExtent is an Antecedent reference in a BasedOn relationship. For example, a StorageExtent could be composed of 120 blocks. However, the Extent itself may use 20 blocks for redundancy data. If another StorageExtent is BasedOn this Extent, only 100 blocks would be available to it. This information ('100 blocks is available for consumption') is indicated in the ConsumableBlocks property. |
OperationalStatus
|
uint16
|
Unknown | 0 |
Other | 1 |
OK | 2 |
Degraded | 3 |
Stressed | 4 |
Predictive Failure | 5 |
Error | 6 |
Non-Recoverable Error | 7 |
Starting | 8 |
Stopping | 9 |
Stopped | 10 |
In Service | 11 |
No Contact | 12 |
Lost Communication | 13 |
Aborted | 14 |
Dormant | 15 |
Supporting Entity in Error | 16 |
Completed | 17 |
Power Mode | 18 |
DMTF Reserved | .. |
Vendor Reserved | 0x8000.. |
|
Indicates the current statuses of the element. Various operational statuses are defined. Many of the enumeration's values are self-explanatory. However, a few are not and are described here in more detail."Stressed"indicates that the element is functioning, but needs attention. Examples of"Stressed"states are overload, overheated, and so on."Predictive Failure"indicates that an element is functioning nominally but predicting a failure in the near future."In Service"describes an element being configured, maintained, cleaned, or otherwise administered."No Contact"indicates that the monitoring system has knowledge of this element, but has never been able to establish communications with it."Lost Communication"indicates that the ManagedSystem Element is known to exist and has been contacted successfully in the past, but is currently unreachable."Stopped"and"Aborted"are similar, although the former implies a clean and orderly stop, while the latter implies an abrupt stop where the state and configuration of the element might need to be updated."Dormant"indicates that the element is inactive or quiesced."Supporting Entity in Error"indicates that this element might be"OK"but that another element, on which it is dependent, is in error. An example is a network service or endpoint that cannot function due to lower-layer networking problems."Completed"indicates that the element has completed its operation. This value should be combined with either OK, Error, or Degraded so that a client can tell if the complete operation Completed with OK (passed), Completed with Error (failed), or Completed with Degraded (the operation finished, but it did not complete OK or did not report an error)."Power Mode"indicates that the element has additional power model information contained in the Associated PowerManagementService association.OperationalStatus replaces the Status property on ManagedSystemElement to provide a consistent approach to enumerations, to address implementation needs for an array property, and to provide a migration path from today's environment to the future. This change was not made earlier because it required the deprecated qualifier. Due to the widespread use of the existing Status property in management applications, it is strongly recommended that providers or instrumentation provide both the Status and OperationalStatus properties. Further, the first value of OperationalStatus should contain the primary status for the element. When instrumented, Status (because it is single-valued) should also provide the primary status of the element. |
OtherEnabledState
|
string
|
|
A string that describes the enabled or disabled state of the element when the EnabledState property is set to 1 ("Other"). This property must be set to null when EnabledState is any value other than 1. |
OtherIdentifyingInfo
|
string
|
|
OtherIdentifyingInfo captures data, in addition to DeviceID information, that could be used to identify a LogicalDevice. For example, you could use this property to hold the operating system's user-friendly name for the Device. |
PackageRedundancy
|
uint16
|
|
How many physical packages can currently fail without data loss. For example, in the storage domain, this might be disk spindles. |
PathCount
|
uint32
|
|
The current FC path count to the BackendVolume. |
PoolID
|
string
|
|
The ID of the associated storage pool. |
Poolname
|
string
|
|
The name of the associated storage pool. |
PreferredWWPN
|
string
|
|
The name of the volume's preferred WWPN. |
Primordial
|
boolean
|
|
If true,"Primordial"indicates that the containing System does not have the ability to create or delete this operational element. This is important because StorageExtents are assembled into higher-level abstractions using the BasedOn association. Although the higher-level abstractions can be created and deleted, the most basic, (that is, primordial), hardware-based storage entities cannot. They are physically realized as part of the System, or are actually managed by some other System and imported as if they were physically realized. In other words, a Primordial StorageExtent exists in, but is not created by its System and conversely a non-Primordial StorageExtent is created in the context of its System. For StorageVolumes, this property will generally be false. One use of this property is to enable algorithms that aggregate StorageExtent.ConsumableSpace across all, StorageExtents but that also want to distinquish the space that underlies Primordial StoragePools. Since implementations are not required to surface all Component StorageExtents of a StoragePool, this information is not accessible in any other way. |
Purpose
|
string
|
|
A free form string describing the media and/or its use. |
QuorumIndex
|
uint8
|
|
The quorum index of the BackendVolume. Valid indices are 0, 1, 2. An index of 3 indicates that this volume isn't usedas quorum disk. |
RequestedState
|
uint16
|
Enabled | 2 |
Disabled | 3 |
Shut Down | 4 |
No Change | 5 |
Offline | 6 |
Test | 7 |
Deferred | 8 |
Quiesce | 9 |
Reboot | 10 |
Reset | 11 |
Not Applicable | 12 |
DMTF Reserved | .. |
Vendor Reserved | 32768..65535 |
|
RequestedState is an integer enumeration that indicates the last requested or desired state for the element. The actual state of the element is represented by EnabledState. This property is provided to compare the last requested and current enabled or disabled states. When EnabledState is set to 5 ("Not Applicable"), then this property has no meaning. By default, the RequestedState of the element is 5 ("No Change"). Refer to the EnabledState property description for explanations of the values in the RequestedState enumeration.There are two new values in RequestedState that build on the statuses of EnabledState. These are"Reboot"(10) and"Reset"(11). Reboot refers to doing a"Shut Down"and then moving to an"Enabled"state. Reset indicates that the element is first"Disabled"and then"Enabled". The distinction between requesting"Shut Down"and"Disabled". Shut Down requests an orderly transition to the Disabled state, and might involve removing power, to completely erase any existing state. The Disabled state requests an immediate disabling of the element, such that it will not run or accept any commands or processing requests.This property is set as the result of a method invocation (such as Start or StopService on CIM_Service), or can be overridden and defined as WRITEable in a subclass. The method approach is considered superior to a WRITEable property, because it allows an explicit invocation of the operation and the return of a result code.A particular instance of EnabledLogicalElement might not support RequestedStateChange. If this occurs, the value 12 ("Not Applicable") is used. |
SequentialAccess
|
boolean
|
|
Boolean set to TRUE if the Storage is sequentially accessed by a MediaAccessDevice. A TapePartition is an example of a sequentially accessed StorageExtent. StorageVolumes, Disk Partitions and LogicalDisks represent randomly accessed Extents. |
StatusDescriptions
|
string
|
|
Strings describing the various OperationalStatus array values. For example, if"Stopping"is the value assigned to OperationalStatus, then this property would contain an explanation as to why an object is being stopped. Entries in this array are correlated with those at the same array index in OperationalStatus. |
UniqueID
|
string
|
|
The SCSI VPD information for this volume. Not available for SVC Clusters running pre v4.2.0 Firmware. |
Read Write |
Caption
|
string
|
|
The Caption property is a short textual description (one-line string) of the object. |
ElementName
|
string
|
|
The BackendVolume's user-friendly name. |