Reversing a FlashCopy relationship

Complete this task to reverse the direction of a FlashCopy^® volume pair.

When the direction of a FlashCopy relationship is reversed, the volume that was previously defined as the target becomes the source for the volume that was previously defined as the source. The data that has changed is copied to the volume that was previously defined as the source. For example, suppose you create a FlashCopy relationship between source volume A and target volume B. Data loss occurs on source volume A. To keep applications running, you can reverse the FlashCopy relationship so that data on volume B is copied to volume A.

The background copy process must complete before you can reverse the direction of the FlashCopy relationship.

Exception: You cannot reverse the direction of the FlashCopy relationship during recovery from the failure of FlashCopy consistency group formation in a Global Mirror configuration due to a failure at the Global Mirror primary site. In this case, after you ensure the consistency of the FlashCopy consistency group target volumes, you can use the Fast Reverse option of the Reverse relationship task before the background copy process completes to reverse the direction of the FlashCopy volume pair.

Perform the following steps to reverse a FlashCopy relationship between a source volume and target volume.

In the navigation, select Real-time Manager > Copy Services > FlashCopy. A page containing a list of FlashCopy volume pairs is displayed. Select one or more volume pairs on which to perform an action.
Select Reverse relationship from the Select Action drop-down menu. Click Go.
Select the copy options for the FlashCopy relationships. You must select whether to enable or disable the Enable change recording, Permit FlashCopy to occur if target volume is online for host access, Inhibit writes to target volume, and Fast Reverse options.
When you have finished selecting your options, click OK to complete the task, or click Cancel to exit without performing the task. The FlashCopy main page is displayed.