HP XP P9500 Storage - Manual (Page 15)

After you re-establish 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
about Compatible FlashCopy pairs: FLASHCPY QUERY RELATIONS” (page 71) .
When you perform the Fast Reverse Restore function by using the Incremental FlashCopy function,
only the updated data is copied from the newly specified S-VOL to the T-VOL. This function cannot
be used in Compatible FlashCopy SE.
When you perform the Fast Reverse Restore function without using the Incremental FlashCopy
function, already copied data is copied from the newly specified S-VOL to the T-VOL.
The following figure shows the workflow that occurs from the time of establishing a Compatible
FlashCopy relationship with the Incremental FlashCopy function to the time of executing the update
copy operation (Fast Reverse Restore).
Figure 9 Performing Fast Reverse Restore
FlashCopy to PPRC Primary Volume function
The FlashCopy to PPRC (Peer-to-Peer Remote Copy) Primary Volume function enables 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 either create Cnt Ac-S Z pairs after creating Compatible FlashCopy
pairs, or create Compatible FlashCopy pairs after creating Cnt Ac-S Z pairs. However, Compatible
FlashCopy to PPRC Primary Volume function 15