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version 1.1.2.1, 2012/01/24 13:50:07
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version 1.1.2.2, 2012/02/15 17:46:20
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// Copyright (c) 2008 DMTF. All rights reserved. |
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[Association, Version ( "2.19.0" ), |
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ClassConstraint { "inv: self.Dependent.IsComposite = true" }, |
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UMLPackagePath ( "CIM::Device::StorageExtents" ), |
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Description ( |
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"This specialization defines how data is striped across " |
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"StorageExtents. Additionally, it includes information on " |
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"distribution of check data so that the \'usual case\' RAID " |
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"devices can be created in one step." )] |
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class CIM_CompositeExtentBasedOn : CIM_BasedOn { |
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[Override ( "Antecedent" ), |
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Min ( 1 ), |
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Description ( "The underlying StorageExtent." )] |
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CIM_StorageExtent REF Antecedent; |
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|
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[Override ( "Dependent" ), |
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Description ( |
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"The StorageExtent which is built on the StorageExtent." )] |
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CIM_StorageExtent REF Dependent; |
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|
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[Required, Override ( "OrderIndex" ), |
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Description ( |
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"Order matters to composite extents. An example of the " |
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"use of this property is when defining a RAID-0 striped " |
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"array of 3 disks. The resultant RAID array is a " |
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"composite extent that is dependent on (as described by " |
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"CompositeExtentBasedOn) the StorageExtents that " |
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"represent each of the 3 disks. The OrderIndex of each " |
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"CompositeExtentBasedOn association from the disk Extents " |
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"to the RAID array could be specified as 1, 2 and 3 to " |
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"indicate the order in which the disk Extents are used to " |
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"access the RAID data." ), |
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MappingStrings { "MIF.DMTF|Protected Space Extent|001.1" }] |
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uint16 OrderIndex; |
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[Description ( |
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"True if logical blocks in the underlying StorageExtents " |
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"are mapped in decrementing order. This property " |
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"corresponds to the INCDEC value in the SCSI SCC-2 Volume " |
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"Set PS_Extent Descriptor." )] |
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boolean LBAsMappedByDecrementing; |
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|
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[Description ( |
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"True if the logical block mapping algorithm includes " |
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"check data bytes. This property corresponds to the " |
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"NOCHKSKIP attribute in the SCC-2 Volume Set PS_Extent " |
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"Descriptor." )] |
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boolean LBAMappingIncludesCheckData; |
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|
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[Description ( |
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"The total number of blocks that will be consumed on the " |
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"Dependent Extent. This is limited by the Antecedent\'s " |
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"NumberOfBlocks, but is included explicitly to provide " |
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"for the DMTF MIF mapping. In SCSI SCC, this is " |
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"equivalent to the NUMBER OF LBA_PS(s) field in the " |
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"Volume Set PS_Extent Descriptor." ), |
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MappingStrings { "MIF.DMTF|Protected Space Extent|001.3" }, |
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ModelCorrespondence { "CIM_StorageExtent.NumberOfBlocks" }] |
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uint64 NumberOfBlocks; |
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[Description ( |
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"The Dependent\'s BlockSize is limited by the " |
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"Antecedent\'s. In SCSI SCC, this is equivalent to the " |
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"NUMBER OF BYTES PER LBA_PS field in the RedundancyGroup " |
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"P_Extent Descriptor." ), |
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Units ( "Bytes" ), |
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MappingStrings { "MIF.DMTF|Protected Space Extent|001.4" }, |
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ModelCorrespondence { "CIM_StorageExtent.BlockSize" }, |
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PUnit ( "byte" )] |
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uint64 BlockSize; |
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|
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[Description ( |
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"Number of bytes which form the stripe size for the " |
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"Dependent StorageExtent. If the CompositeExtent is " |
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"concatenated instead of striped, then " |
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"UserDataStripeDepth should be set to zero." ), |
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Units ( "Bytes" ), |
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MappingStrings { "MIF.DMTF|Protected Space Extent|001.6" }, |
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PUnit ( "byte" )] |
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uint64 UserDataStripeDepth; |
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[Description ( |
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"Number of bytes of user data to skip before starting the " |
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"check data interleave." ), |
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Units ( "Bytes" ), |
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MappingStrings { "MIF.DMTF|Physical Extent|001.6" }, |
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PUnit ( "byte" )] |
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uint64 UnitsBeforeCheckDataInterleave; |
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|
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[Description ( |
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"Number of bytes to be reserved for check data." ), |
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Units ( "Bytes" ), |
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MappingStrings { "MIF.DMTF|Physical Extent|001.7" }, |
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PUnit ( "byte" )] |
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uint64 UnitsOfCheckData; |
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[Description ( "Number of bytes to be reserved for user data." ), |
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Units ( "Bytes" ), |
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MappingStrings { "MIF.DMTF|Physical Extent|001.8" }, |
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PUnit ( "byte" )] |
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uint64 UnitsOfUserData; |
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}; |
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