HP XP Business Copy Software - Manual (Page 130)

130 ShadowImage for the XP1024/XP128/XP12000/XP10000/SVS 200
See Table 64 for the explanation of the available parameters of this command. When
FASTREPLICATION is not specified, the copy operation will be performed in the same way when
PREFERRED is specified.
• FCCGFREEZE
This option is for temporarily suspending the write operation from the host to the S-VOLs when you
create pairs, in order to maintain the consistency of data. To resume the write operation from the host to
the S-VOLs, use the DFSMSdss CGCREATE command or the TSO FCWITHDR command. The following
are examples of the FCCGFREEZE and the CGCREATE commands.
Figure 69 Example of COPY FULL command (FCCGFREEZE)
Figure 70 Example of CGCREATE command
For details about the processing of suspending and resuming the write operation from the host to the
S-VOLs, see ” Copying Data by Using Consistency Group ” on page 106.
• FCINCREMENTAL
To use the Incremental FlashCopy function, use FCINCREMENTAL. For details about the Incremental
FlashCopy function, see ” Incremental FlashCopy Function ” on page 107.
When FCINCREMENTAL is specified, a relationship covering the entire volume will be created and
maintained after the background copying process is completed. Moreover, when FCINCREMENTAL is
specified, you can manage the differential data between the S VOL and the T VOL. When you re-execute
the COPY command with specifying FCINCREMENTAL on a relationship created by specifying
FCINCREMENTAL, only the differential data will be copied to the T VOL. If you reverse the S VOL and the
T VOL and execute the COPY command (Reverse Restore), only the differential data will be copied to the
resulting T VOL after performing Reverse Restore.
NOTE: You cannot write data on the T-VOL while the differential data is managed. The following is an
example of the COPY FULL command with FCINCREMENTAL.
Table 64 FASTREPLICATION Parameter Values
Parameter values Description
PREFERRED Executes FlashCopy Mirror Version 2 copy operation as a priority. When FlashCopy
Mirror Version 2 is not used, executes concurrent copy or copy operation via the host.
REQUIRED Executes FlashCopy Mirror Version 2 copy operation unconditionally. When FlashCopy
Mirror Version 2 is not used, outputs error.
NONE Does not execute FlashCopy Mirror Version 2 copy operation.
//SYSPRINT DD SYSOUT=*
//VOL1 DD UNIT=3390,VOL=SER=FCV200,DISP=OLD
//VOL2 DD UNIT=3390,VOL=SER=FCV201,DISP=OLD
//SYSIN DD*
COPY FULL INDDNAME(VOL1) OUTDDNAME(VOL2)
FASTREP(REQ) FCCGFREEZ
/*
//SYSPRINT DD SYSOUT=*
//SYSIN DD*
CGCREATE ACCESSVOLUME(FCV200) FCCGVERIFY(FCV200)