HP XP Business Copy Software - Manual (Page 109)

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When performing a Reverse Restore, only the updated data will be copied from newly specified the S-VOL
to the T-VOL the same as the case of normal re-establishment.
The following figure shows the workflow from the establishing of the relationship of FlashCopy Mirror
Version 2 to the executing of the update copy operation (Reverse Restore) by the Incremental FlashCopy
function.
Figure 54 Performing Reverse Restore After Incremental FlashCopy Function is Used
Maximum Number of FlashCopy Mirror Version 2 Pairs
This section describes the maximum number of relations assuming that you do not use the relationship
expansion function. For information about the maximum number of relationships (i.e., maximum number of
pairs) when you use the relationship expansion function, see ” Relationship Expansion ”.
FlashCopy Mirror Version 2 can establish up to 32,768 pairs. However, FlashCopy Mirror Version 2 may
not be able to establish up to 32,768 relations depending on the number of resources required for the copy
operation that vary according to the attributes (emulation type, capacity, the size of the data that is copied,