Compatible FlashCopy V2 Fast Reverse Restore using the ICKDSF FLASHCPY ESTABLISH command

Compatible FlashCopy User Guide for VSP One Block 85
Version
10.5.x
Audience
anonymous
Part Number
MK-26VSP1B031-02
ft:lastEdition
2026-05-04

To perform a Fast Reverse Restore operation, use the Incremental FlashCopy® function to create a Compatible FlashCopy® V2 relationship, reverse the S-VOL and the T-VOL (Fast Reverse Restore), and then copy the differential data.

You can copy the differential data of an existing Compatible FlashCopy® V2 relationship by using the Fast Reverse Restore function to reverse the S-VOL and the T-VOL.

  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 FASTREVREST parameter to reverse the S-VOL and T-VOL to perform the Fast Reverse Restore function. For example:
    FLASHCPY ESTABLISH UNIT(X'7001') TARGETVOL(X'00',X'00',7000) FASTREVREST
    When you perform the Fast Reverse Restore operation, the S-VOL becomes the T-VOL, and the T-VOL becomes the S-VOL. The data of the S-VOL is copied to the T-VOL as follows:
    • If the S-VOL is updated before you perform Fast Reverse Restore, only the updated data is copied to the T-VOL.
    • If the T-VOL is updated before you perform Fast Reverse Restore, only the updated data is copied from the S-VOL to the T-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. If you specify a value which is different from the original relationship, such as V2 for the Incremental Type1 relationship, or YES for the Incremental Type2 relationship, the command is rejected.