Class CIM_Snapshot
extends CIM_StorageExtent

Deprecated. Snapshots are now modeled in a more abstrct way using StorageExtent and StorageSynchronized. The Snapshot class is an optional construct. It can be used to represent an Extent that contains a full copy of another Extent, or the changes to that Extent when performing a delta-based (delta before or delta after) copy. Snapshot's definition in CIM is not equivalent to the act of creating a volume or file-based snapshot, or a point in time copy. It is at a much lower level and represents the use of storage to hold a copied image of an Extent, or to hold changes to an Extent. Use of the Snapshot object when making a full copy is only recommended if the purpose is to describe the existence of a copy. (This use will be very infrequent.) The problem with describing an Extent solely as a 'snapshot' is that when the snapshot/copy is broken, the object must be destroyed. Typically, this object still holds valid data, and would have to be reinstantiated. If the 'full copy' object is to be treated as a StorageVolume or more general Extent, then it should be modeled as such from the beginning - i.e., not as an instance of Snapshot but as an instance of a generic StorageExtent or StorageVolume. In this case, the Synchronized association would be used to describe that one StorageExtent is synchronized with another. When describing a delta-based snapshot/point in time copy, the Snapshot object represents the store holding the before/after image changes to the original Extent. For example, when doing a 'delta before' Snapshot, the resultant target would be modeled as a StorageExtent that is BasedOn the original Extent and the instance of Snapshot (that holds the changes to the original Extent).

Table of Contents
Hierarchy
Direct Known Subclasses
Class Qualifiers
Class Properties
Class Methods

Class Hierarchy

CIM_ManagedElement
   |
   +--CIM_ManagedSystemElement
   |
   +--CIM_LogicalElement
   |
   +--CIM_EnabledLogicalElement
   |
   +--CIM_LogicalDevice
   |
   +--CIM_StorageExtent
   |
   +--CIM_Snapshot

Direct Known Subclasses

Class Qualifiers

NameData TypeValue
DeprecatedstringNo Value
DescriptionstringDeprecated. Snapshots are now modeled in a more abstrct way using StorageExtent and StorageSynchronized. The Snapshot class is an optional construct. It can be used to represent an Extent that contains a full copy of another Extent, or the changes to that Extent when performing a delta-based (delta before or delta after) copy. Snapshot's definition in CIM is not equivalent to the act of creating a volume or file-based snapshot, or a point in time copy. It is at a much lower level and represents the use of storage to hold a copied image of an Extent, or to hold changes to an Extent. Use of the Snapshot object when making a full copy is only recommended if the purpose is to describe the existence of a copy. (This use will be very infrequent.) The problem with describing an Extent solely as a 'snapshot' is that when the snapshot/copy is broken, the object must be destroyed. Typically, this object still holds valid data, and would have to be reinstantiated. If the 'full copy' object is to be treated as a StorageVolume or more general Extent, then it should be modeled as such from the beginning - i.e., not as an instance of Snapshot but as an instance of a generic StorageExtent or StorageVolume. In this case, the Synchronized association would be used to describe that one StorageExtent is synchronized with another. When describing a delta-based snapshot/point in time copy, the Snapshot object represents the store holding the before/after image changes to the original Extent. For example, when doing a 'delta before' Snapshot, the resultant target would be modeled as a StorageExtent that is BasedOn the original Extent and the instance of Snapshot (that holds the changes to the original Extent).
UMLPackagePathstringCIM::Device::SccExtents
Versionstring2.7.0

Class Properties

Local Class Properties

NameData TypeDefault ValueQualifiers
NameData TypeValue
IsSyncedboolean
DeprecatedstringCIM_Synchronized.SyncMaintained
DescriptionstringTrue indicates that the snapshot is synced.
SyncTimedatetime
DeprecatedstringCIM_Synchronized.WhenSynced
DescriptionstringThe time stamp indicating when the sync occurred.

Inherited Properties

NameData TypeClass Origin
Accessuint16CIM_StorageExtent
Availabilityuint16CIM_LogicalDevice
BlockSizeuint64CIM_StorageExtent
CaptionstringCIM_ManagedElement
CommunicationStatusuint16CIM_ManagedSystemElement
ConsumableBlocksuint64CIM_StorageExtent
CreationClassNamestringCIM_LogicalDevice
DataOrganizationuint16CIM_StorageExtent
DataRedundancyuint16CIM_StorageExtent
DeltaReservationuint8CIM_StorageExtent
DescriptionstringCIM_ManagedElement
DetailedStatusuint16CIM_ManagedSystemElement
DeviceIDstringCIM_LogicalDevice
ElementNamestringCIM_ManagedElement
EnabledDefaultuint16CIM_EnabledLogicalElement
EnabledStateuint16CIM_EnabledLogicalElement
ErrorClearedbooleanCIM_LogicalDevice
ErrorDescriptionstringCIM_LogicalDevice
ErrorMethodologystringCIM_StorageExtent
ExtentInterleaveDepthuint64CIM_StorageExtent
ExtentStripeLengthuint64CIM_StorageExtent
Generationuint64CIM_ManagedElement
HealthStateuint16CIM_ManagedSystemElement
InstallDatedatetimeCIM_ManagedSystemElement
InstanceIDstringCIM_ManagedElement
IsBasedOnUnderlyingRedundancybooleanCIM_StorageExtent
IsCompositebooleanCIM_StorageExtent
IsConcatenatedbooleanCIM_StorageExtent
LastErrorCodeuint32CIM_LogicalDevice
LocationIndicatoruint16CIM_LogicalDevice
MaxQuiesceTimeuint64CIM_LogicalDevice
NamestringCIM_StorageExtent
NameFormatuint16CIM_StorageExtent
NameNamespaceuint16CIM_StorageExtent
NoSinglePointOfFailurebooleanCIM_StorageExtent
NumberOfBlocksuint64CIM_StorageExtent
OperatingStatusuint16CIM_ManagedSystemElement
OtherEnabledStatestringCIM_EnabledLogicalElement
OtherNameFormatstringCIM_StorageExtent
OtherNameNamespacestringCIM_StorageExtent
OtherUsageDescriptionstringCIM_StorageExtent
PackageRedundancyuint16CIM_StorageExtent
PowerManagementSupportedbooleanCIM_LogicalDevice
PowerOnHoursuint64CIM_LogicalDevice
PrimaryStatusuint16CIM_ManagedSystemElement
PrimordialbooleanCIM_StorageExtent
PurposestringCIM_StorageExtent
RequestedStateuint16CIM_EnabledLogicalElement
SequentialAccessbooleanCIM_StorageExtent
StatusstringCIM_ManagedSystemElement
StatusInfouint16CIM_LogicalDevice
SystemCreationClassNamestringCIM_LogicalDevice
SystemNamestringCIM_LogicalDevice
TimeOfLastStateChangedatetimeCIM_EnabledLogicalElement
TotalPowerOnHoursuint64CIM_LogicalDevice
TransitioningToStateuint16CIM_EnabledLogicalElement
Usageuint16CIM_StorageExtent
AdditionalAvailabilityuint16[]CIM_LogicalDevice
AvailableRequestedStatesuint16[]CIM_EnabledLogicalElement
ClientSettableUsageuint16[]CIM_StorageExtent
ExtentDiscriminatorstring[]CIM_StorageExtent
ExtentStatusuint16[]CIM_StorageExtent
IdentifyingDescriptionsstring[]CIM_LogicalDevice
OperationalStatusuint16[]CIM_ManagedSystemElement
OtherIdentifyingInfostring[]CIM_LogicalDevice
PowerManagementCapabilitiesuint16[]CIM_LogicalDevice
StatusDescriptionsstring[]CIM_ManagedSystemElement

Class Methods

Inherited Class Methods

NameReturn TypeClass Origin
EnableDeviceuint32CIM_LogicalDevice
OnlineDeviceuint32CIM_LogicalDevice
QuiesceDeviceuint32CIM_LogicalDevice
RequestStateChangeuint32CIM_EnabledLogicalElement
Resetuint32CIM_LogicalDevice
RestorePropertiesuint32CIM_LogicalDevice
SavePropertiesuint32CIM_LogicalDevice
SetPowerStateuint32CIM_LogicalDevice