HP P9000 for Compatible FlashCopy Mirroring User Guide (AV400-96388, October 2011)

After you reestablish a relationship by using the Fast Reverse Restore function, the contents of the
new S-VOL are not ensured.
You can judge whether the Fast Reverse Restore function can be used by examining the results of
the FLASHCOPY QUERY RELATIONS command of ICKDSF. For details, see “Displaying information
on compatible FlashCopy pairs: FLASHCPY QUERY RELATIONS” (page 80).
When you perform the Fast Reverse Restore function by using the Incremental FlashCopy function,
only the updated data is copied from newly specified S-VOL to T-VOL.
When you perform the Fast Reverse Restore function without using the Incremental FlashCopy
function, already copied data is copied from newly specified S-VOL to T-VOL.
The following figure shows the workflow that occurs from the establishing of the Compatible
FlashCopy relationship by the Incremental FlashCopy function to the executing of the update copy
operation (Fast Reverse Restore).
Figure 9 Performing fast reverse restore
NOTE: This function can be used in Compatible FlashCopy® SE. However, Fast Reverse Restore
function by use of Incremental FlashCopy function cannot be used.
FlashCopy to PPRC Primary Volume function
The FlashCopy to PPRC Primary Volume function allows you to share Compatible FlashCopy T-VOLs
and Cnt Ac-S Z M-VOLs. When you share Compatible FlashCopy T-VOLs and Cnt Ac-S Z M-VOLs,
the status of the Cnt Ac-S Z pairs must be Duplex, Pending duplex, or Suspend. Also, you can
14 About Compatible FlashCopy operations