HP StorageWorks XP Remote Web Console Software - Manual (Page 97)

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
“FLASHCPY ESTABLISH Command (Incremental FlashCopy)” (page 97) .
Figure 55 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 FASTREVREST parameter and
reversing the S-VOL and the T-VOL. See
“FLASHCPY ESTABLISH Command (Fast Reverse
Restore)” (page 97) .
Figure 56 FLASHCPY ESTABLISH Command (Fast Reverse Restore)
FLASHCPY ESTABLISH UNIT(X'7000') TARGETVOL(X'00',X'01',7001) CHANGERECORDING(YES)
By using Fast Reverse Restore, the S-VOL becomes a T-VOL and T-VOL becomes an S-VOL,
and then the data of the resulting S-VOL is copied to the resulting T-VOL in the following ways:
•
If the S-VOL was updated before performing Fast Reverse Restore, Fast Reverse Restore
copies only the updated data from S-VOL to T-VOL.
•
If the T-VOL was updated before performing Fast Reverse Restore, Fast Reverse Restore
copies the updated data from the S-VOL to the T-VOL.
Establishing Version 2 Relationships by Volumes Using the ANTRQST Macro Command
“ANTRQST Macro Command Parameters (Version 2)” (page 98) lists the parameters you can use
with the ANTRQST command when you establish Version 2 relationships by volumes.
Establishing Version 2 Relationships 97