HP StorageWorks XP Remote Web Console Software User Manual
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When the S-VOL is updated, only the data of the updated part of the S-VOL (differential data)
will be copied to the T-VOL. When the T-VOL is updated, only the data of the updated part
of the T-VOL will be copied to the S-VOL.
6.
Set the CHANGERECORDING parameter to YES to maintain the relationship after the copying
process is completed and to manage the differential data between the S-VOL and the T-VOL.
If CHANGERECORDING parameter is not specified, the relationship will be deleted after the
copying process is completed.
Creating Version 2 Pairs by Using Incremental FlashCopy (Reverse Restore): FLASHCPY
ESTABLISH
To create Version 2 pairs by using the Incremental FlashCopy function, and then reverse the S-VOL
and the T-VOL (Reverse Restore) so that the differential data will be copied:
1.
Set the T-VOL to offline.
2.
Specify the JCL statement in the DDNAME parameter or specify the S-VOL device number in
the UNITADDRESS parameter.
3.
Specify the CU number, LDEV number, and device number of the T-VOL for the TARGETVOL
parameter.
4.
Execute the FLASHCPY ESTABLISH command, specifying YES for the CHANGERECORDING
parameter as shown in
Figure 53 FLASHCPY ESTABLISH Command (Incremental FlashCopy)
FLASHCPY ESTABLISH UNIT(X'7000') TARGETVOL(X'00',X'01',7001) CHANGERECORDING(YES)
The Version 2 pair will be created.
5.
Execute the FLASHCPY ESTABLISH command, specifying the RESTORE parameter and
reversing the S-VOL and the T-VOL as shown in
.
Figure 54 FLASHCPY ESTABLISH Command (Reverse Restore)
FLASHCPY ESTABLISH UNIT(X'7001') TARGETVOL(X'00',X'00',7000) RESTORE
If the S-VOL is updated, before performing Reverse Restore, only the data of the updated part
of the S-VOL (differential data) is copied to the T-VOL. When the T-VOL is updated, before
performing Reverse Restore, only the data of the updated part of the T-VOL is copied from the
S-VOL.
6.
Set the CHANGERECORDING parameter to YES to maintain the relationship after the copying
process is completed and to manage the differential data between the S-VOL and the T-VOL.
If the CHANGERECORDING parameter is not specified, the relationship will be deleted after
the copying process is completed.
Creating Version 2 Pairs Using Incremental FlashCopy (Fast Reverse Restore): FLASHCPY ESTABLISH
To create Version 2 pairs using the Incremental FlashCopy function and to reverse the S-VOL and
the T-VOL (Fast Reverse Restore) so that the differential data will be copied, do the following:
1.
Set the T-VOL to offline.
2.
Specify the JCL statement in the DDNAME parameter, or specify the S-VOL device number in
the UNITADDRESS parameter.
3.
Specify the CU number, LDEV number, and device number of the T-VOL for the TARGETVOL
parameter.
4.
Execute the FLASHCPY ESTABLISH command, specifying YES for the CHANGERECORDING
parameter. See
.
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Performing Version 2 Operations