association CIM_LogicalDiskBasedOnExtent : CIM_BasedOn

Description:

LogicalDisks can be BasedOn a single StorageVolume, Memory (in the case of a RAM Disk), a DiskPartition or other StorageExtent. These relationships are made explicit in this association. Subclasses of the association, LogicalDiskBasedOn Partition and LogicalDiskBasedOnVolume, detail the 'typical' semantics.

Definition:

Feature Type Class Origin Qualifiers
Antecedent CIM_StorageExtent CIM_Dependency
Override Antecedent
Max 1
Description The StorageExtent.
Key TRUE
Dependent CIM_LogicalDisk CIM_Dependency
Override Dependent
Description The LogicalDisk which is built on the StorageExtent.
Key TRUE
StartingAddress uint64 CIM_BasedOn
Description StartingAddress indicates where in lower level storage, the higher level Extent begins.
EndingAddress uint64 CIM_BasedOn
Description EndingAddress indicates where in lower level storage, the higher level Extent ends. This property is useful when mapping non-contiguous Extents into a higher level grouping.
OrderIndex uint16 CIM_BasedOn
Description If there is an order to the BasedOn associations that describe how a higher level StorageExtent is assembled, the OrderIndex property indicates this. When an order exists, the instances of BasedOn with the same Dependent value (i.e., the same higher level Extent) should place unique values in the OrderIndex property. The lowest value implies the first member of the collection of lower level Extents, and increasing values imply successive members of the collection. If there is no ordered relationship, a value of zero should be specified. An example of the use of this property is to define a RAID-0 striped array of 3 disks. The resultant RAID array is a StorageExtent that is dependent on (BasedOn) the StorageExtents that describe each of the 3 disks. The OrderIndex of each BasedOn association from the disk Extents to the RAID array could be specified as 1, 2 and 3 to indicate the order in which the disk Extents are used to access the RAID data.

Direct Subclasses:

CIM_LogicalDiskBasedOnPartition, CIM_LogicalDiskBasedOnVolume

Typographical Conventions:

  1. Inherited properties are italicized.
  2. Local properties are bolded.
  3. Key properties are highlighted in gold

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