HP 3PAR CIM API Programming Reference (OS 3.1.2 MU2) (QL226-97015, June 2013)

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.
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