HP 3PAR StoreServ 7400 2-node HP 3PAR CIM API Programming Reference (OS 3.1.2 - Page 59
Capacity Calculations, Non-CPVV, CPVV, For CPVV,
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For CPVV, the TPD_AllocatedFromStoragePool association links the TPD_DeltaReplicaStoragePool with the source DSP. For ThinStorageVolume (TPVV), the TPD_AllocatedFromStoragePool association links the TPD_DeltaReplicaStoragePool with the source SD DynamicStoragePool (as opposed to the user DynamicStoragePool). Capacity Calculations Non-CPVV TotalManagedSpace of the TPD_DeltaReplicaStoragePool equals to the raw SD space. Space used by SA is not included in TotalManagedSpace, but is included in the TPD_AllocatedFromStoragePool.SpaceConsumed value, so to deduce the raw SA space, one can deduct Pool.TotalManagedSpace from SpaceConsumed. The UpdateDeltaSnapshotSpace() method should be called to prevent the value of RemainingManagedSpace from getting too stale. Pool.TotalManagedSpace = raw SD size Pool.RemainingManagedSpace = raw SD size - SUM(space used by snapshots) SpaceConsumed of the TPD_AllocatedFromStoragePool between the concrete pool and TPD_DeltaReplicaStoragePool equals to the sum of the raw admin and raw snap user size. SpaceLimit and SpaceLimitWarningThreshold are both NULL since these properties apply only to CPVV. SpaceConsumed by Replica Pool from Concrete Pool = raw SD size + raw SA size SpaceConsumed of the TPD_AllocatedFromStoragePool between TPD_DeltaReplicaStoragePool and a snapshot volume equals the space consumed by the snapshot. This value should be updated via the UpdateDeltaSnapshotSpace() method to prevent it from getting too stale. SpaceConsumed by Snapshot Vol from Replica Pool = space used by a snapshot CPVV When a base volume is created with a StorageSetting in which TSPName is specified, the resulting TPD_DeltaReplicaStoragePool is allocated from the DSP. A TPD_AllocatedFromStoragePool association is created between the TPD_DeltaReplicaStoragePool and the parent DSP. TPD_AllocatedFromStoragePool.SpaceLimit and TPD_AllocatedFromStoragePool.SpaceLimitThresholdWarning of this association corresponds to the allocation limit (-al) and allocation warning (-aw) respectively. SpaceLimit = (Source Volume Size * al)/100 SpaceLimitWarningThreshold = aw FYI, SpaceLimit is the consumption limit for the allocated TPD_DeltaReplicaStoragePool from the associated DSP in bytes. SpaceLimitThresholdWarning indicates when a warning indication should be generated based on the total amount of space consumed being greater than or equal to (SpaceLimit*SpaceLimitWarningThreshold)/100. A SpaceLimit value of 0 (default) means that no limit is specified. SpaceLimitThresholdWarning is meaningless if SpaceLimit is 0. Copy Services Subprofile 59