HP P9000 for Compatible FlashCopy Mirroring User Guide (AV400-96388, October 2011)

Creating Compatible FlashCopy pairs by using incremental FlashCopy (Reverse Restore): FLASHCPY

ESTABLISH

To create Compatible FlashCopy 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. See the following example.

Example 10 FLASHCPY ESTABLISH command (Incremental FlashCopy)

FLASHCPY ESTABLISH UNIT(X'7000') TARGETVOL(X'00',X'01',7001) CHANGERECORDING(YES)

The Compatible FlashCopy pair will be created.

5. Execute the FLASHCPY ESTABLISH command, specifying the RESTORE parameter, and

reversing the S-VOL and the T-VOL. See the following example.

Example 11 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.

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 copying

process is completed.

Creating Compatible FlashCopy pairs by using incremental FlashCopy (Fast Reverse Restore):

FLASHCPY ESTABLISH

To create Compatible FlashCopy pairs by using the Incremental FlashCopy function, and then

reverse the S-VOL and the T-VOL (Fast Reverse Restore) so that the differential data will be copied: