HP XP7 Storage - Manual (Page 23)

the relationship cannot be established in the local site. Release the relationship in the remote
site, and try again.
•
When you use the Preserve Mirror Compatible FlashCopy function, the MIH (missing interrupt
handler) value should be the same as for Cnt Ac-S Z operations (preferred MIH value for Cnt
Ac-S Z is 60 seconds). Also, you should specify 30 seconds for the RIO MIH time which
executes path monitoring of Cnt Ac-S Z. For details about the RIO MIH time, see the HP XP7
Continuous Access Synchronous for Mainframe Systems User Guide.
Copying process of Compatible FlashCopy relationships and Cnt Ac-S Z pairs
(Compatible FlashCopy only)
The following figures show the copying process of Compatible FlashCopy relationships and Cnt
Ac-S Z pairs with the Preserve Mirror Compatible FlashCopy function (shown using COPY mode).
Figure 17 The flow of Preserve Mirror Compatible FlashCopy function (COPY mode)
Preserve Mirror Compatible FlashCopy function starts to copy after the following:
•
The Cnt Ac-S Z P-VOL in DKC#1 becomes the Compatible FlashCopy S-VOL.
•
The Cnt Ac-S Z S-VOL in #2 becomes the Compatible FlashCopy S-VOL.
•
The Compatible FlashCopy relationship is established in both DKCs.
After the relationship is established, the Cnt Ac-S Z T-VOL in DKC#2 becomes the Compatible
FlashCopy S-VOL, and the Cnt Ac-S Z T-VOL in #2 becomes the Compatible FlashCopy T-VOL.
Preserve mirror Compatible FlashCopy function (Compatible FlashCopy only) 23