HP XP P9500 Storage - Manual (Page 20)

Compatible FlashCopy to Continuous Access Journal Z Primary Volume
Function
The Compatible FlashCopy to Cnt Ac-J Z Primary Volume function enables you to share Compatible
FlashCopy T-VOLs and Cnt Ac-J Z P-VOLs. When you share Compatible FlashCopy T-VOLs and
Cnt Ac-J Z P-VOLs, the status of the Cnt Ac-J Z pairs must be Duplex, Pending duplex, Suspend or
Suspending. Also, you can either create Cnt Ac-J Z pairs after creating Compatible FlashCopy
pairs, or create Compatible FlashCopy pairs after creating Cnt Ac-J Z pairs. However, Compatible
FlashCopy pairs can be created after creating Cnt Ac-J Z pairs only when the following options
are used:
•
DFSMSdss: FCTOPPRCPRIMARY
•
TSO: TGTPPRIM (YES)
•
ICKDSF: TGTOKASPPRCPRIM (YES)
•
ANTRQST Macro: TGTPPRIM (YES)
For details about using Compatible FlashCopy with Cnt Ac-J Z, see “Using Compatible FlashCopy
with Continuous Access Journal Z” (page 31) .
•
The Continuous Access Journal Z program product is required for using the Compatible
FlashCopy to Cnt Ac-J Z Primary Volume function.
•
The FlashCopy to PPRC Primary Volume function can be used regardless of the status of Cnt
Ac-J Z.
•
Data that Compatible FlashCopy copies to Cnt Ac-J Z P-VOLs is transferred to Cnt Ac-J Z S-VOLs
asynchronously. Cnt Ac-J Z displays the progress of this asynchronous data transfer. Depending
on the timing of the Compatible FlashCopy and Cnt Ac-J Z copy operations, a time delay may
occur between the Compatible FlashCopy copy operation and the Cnt Ac-J Z copy operation,
and the Cnt Ac-J Z asynchronous data transfer may progress slowly.
•
If the Compatible FlashCopy S-VOL and T-VOL are both Thin Provisioning Z volumes, the
number of pages remaining in T-VOL may differ depending on the timing.
•
A volume shared by two Cnt Ac-J Z pairs in a 3DC multi-target configuration in three Cnt Ac-J
Z sites cannot be used as a Compatible FlashCopy V2 T-VOL.
The copy process of Compatible FlashCopy pairs and Cnt Ac-J Z pairs by the Compatible FlashCopy
to Cnt Ac-J Z Primary Volume function is the same as that of the FlashCopy to PPRC Primary Volume
function.
Preserve Mirror Compatible FlashCopy Function
If a Compatible FlashCopy T-VOL is a Cnt Ac-S Z M-VOL, the FlashCopy to PPRC Primary Volume
function copies data from the Compatible FlashCopy T-VOL to the Cnt Ac-S Z R-VOL. During this
function’s data copy, the Cnt Ac-S Z pair is in Pending status. If a failure occurs while copying,
the data on the Cnt Ac-S Z R-VOL cannot be guaranteed. The Preserve Mirror Compatible FlashCopy
function allows you to copy the Compatible FlashCopy data to the remote site with the Cnt Ac-S
Z pairs in Duplex status.
20 About Compatible FlashCopy operations