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_AllocatedLogicalElement
   |
   +--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 Type
Accessuint16
AllocationStatestring
Availabilityuint16
BlockSizeuint64
Captionstring
CommunicationStatusuint16
CompressionRateuint16
CompressionStateuint16
ConsumableBlocksuint64
CreationClassNamestring
DataOrganizationuint16
DataRedundancyuint16
DeltaReservationuint8
Descriptionstring
DetailedStatusuint16
DeviceIDstring
ElementNamestring
EnabledDefaultuint16
EnabledStateuint16
ErrorClearedboolean
ErrorDescriptionstring
ErrorMethodologystring
ExtentInterleaveDepthuint64
ExtentStripeLengthuint64
Generationuint64
HealthStateuint16
InstallDatedatetime
InstanceIDstring
IsBasedOnUnderlyingRedundancyboolean
IsCompositeboolean
IsCompressedboolean
IsConcatenatedboolean
LastErrorCodeuint32
LocationIndicatoruint16
MaxQuiesceTimeuint64
Namestring
NameFormatuint16
NameNamespaceuint16
NoSinglePointOfFailureboolean
NumberOfBlocksuint64
OperatingStatusuint16
OtherEnabledStatestring
OtherNameFormatstring
OtherNameNamespacestring
OtherUsageDescriptionstring
PackageRedundancyuint16
PowerManagementSupportedboolean
PowerOnHoursuint64
PrimaryStatusuint16
Primordialboolean
Purposestring
RequestedStateuint16
SequentialAccessboolean
Statusstring
StatusInfouint16
SystemCreationClassNamestring
SystemNamestring
TimeOfLastStateChangedatetime
TotalPowerOnHoursuint64
TransitioningToStateuint16
Usageuint16
AdditionalAvailabilityuint16[]
AvailableRequestedStatesuint16[]
ClientSettableUsageuint16[]
ExtentDiscriminatorstring[]
ExtentStatusuint16[]
IdentifyingDescriptionsstring[]
OperationalStatusuint16[]
OtherIdentifyingInfostring[]
PowerManagementCapabilitiesuint16[]
StatusDescriptionsstring[]

Class Methods

Inherited Class Methods

NameReturn Type
EnableDeviceuint32
OnlineDeviceuint32
QuiesceDeviceuint32
RequestStateChangeuint32
Resetuint32
RestorePropertiesuint32
SavePropertiesuint32
SetPowerStateuint32