Compatible FlashCopy V2 Restore using the ICKDSF FLASHCPY ESTABLISH command

To perform a Restore operation, use the Incremental FlashCopy® function to create a Compatible FlashCopy^® V2 relationship, and create a relationship again, and then copy the differential data.

1. Set the T-VOL offline.
2. Specify a JCL DD statement for the DDNAME parameter or the device number of the source volume for the UNITADDRESS parameter.
3. Specify the CU number, LDEV number, and device number of the T-VOL for the TARGETVOL parameter.
4. Specify YES or V2 for the CHANGERECORDING parameter to execute the FLASHCPY ESTABLISH command, for example:
   FLASHCPY ESTABLISH UNIT(X'7000') TARGETVOL(X'00',X'01',7001) CHANGERECORDING(YES)
   A Compatible FlashCopy^® V2 relationship is created. If you specify YES for the CHANGERECORDING parameter, an Incremental Type1 relationship is created. If you specify V2, an Incremental Type2 relationship is created.
5. Execute the FLASHCPY ESTABLISH command with the RESTORE parameter using an existing Compatible FlashCopy^® V2 relationship. For example:
   FLASHCPY ESTABLISH UNIT(X'7000') TARGETVOL(X'00',X'01',7001) RESTORE

   When the S-VOL is updated, only the data that has changed on the S-VOL (differential data) will be copied to the T-VOL. When the T-VOL is updated, only the data that has changed on the T-VOL will be copied from the S-VOL.

   Set the CHANGERECORDING parameter to YES or V2 to maintain the relationship after the copy process is completed and to maintain tracking differential data between the S-VOL and the T-VOL. If you do not specify the CHANGERECORDING parameter, the relationship will be deleted after the copy operation is completed.

   When you specify YES or V2 for the CHANGERECORDING parameter, the incremental type of the original relationship is inherited. If you specify a value which is different from the original relationship, such as V2 for an Incremental Type1 relationship, or YES for an Incremental Type2 relationship, you cannot change the incremental type.