HP StorageWorks XP Remote Web Console Software - Manual (Page 39)

function. This reversal re-establishes the relationship with the data flowing in the opposite direction.
However, you cannot perform the Reverse Restore function in the following cases:
•
If the original relationship was established without using the Incremental FlashCopy function
•
If a copy operation established in COPY mode is not yet completed
•
If the original relationship was established in NOCOPY mode
•
If the relationship being reversed includes a relationship established with multiple volumes
•
If the S-VOL capacity exceeds the T-VOL capacity in the relationship being reversed
•
If the original relationship was re-established using the Fast Reverse Restore function
•
If the S-VOL or T-VOL is an external volume.
For details about Fast Reverse Restore function, see “Fast Reverse Restore Function” (page 40) .
You can judge whether the Reverse Restore function can be used by examining the results of the
FLASHCOPY QUERY RELATIONS
command of ICKDSF. For details, see “Displaying Information
on Version 2 Pairs: FLASHCPY QUERY RELATIONS” (page 135) .
When you perform Reverse Restore, only the updated data is copied from newly specified S-VOL
to T-VOL.
“Performing Reverse Restore after Incremental FlashCopy Function is Used” (page 40) shows the
workflow from establishing the Version 2 relationship by the Incremental FlashCopy function to
executing the update copy operation (Reverse Restore).
Reverse Restore Function 39