When you delete a pair from the secondary system, make sure that the S-VOL and P-VOL are identical, including the volume labels. Take all necessary steps to prevent system problems due to duplicate volumes.Deleting pairs
A TrueCopy pair can be deleted. Doing this deletes the TC relationship, though not the volumes or their data.
When it is no longer necessary to maintain a remote copy of the P-VOL, delete a pair from the primary system only. All update operations are stopped and pair status for both the P-VOL and S-VOL changes to unpaired.
When a pair is deleted, the primary system continues to accept write I/O to the former P-VOL but does not keep track of the updates.
Delete a pair from the secondary system only for disaster recovery purposes. When you do this, the secondary system changes the S-VOL pair status to unpaired, the primary system detects that the S-VOL status is unpaired and then changes the P-VOL status to PSUS (Delete pair to RCU).
To restart a pair that was deleted from the secondary system, you must delete the pair from the primary system and then create the pair from the primary system.
When you delete a pair from the secondary system, make sure that the S-VOL and P-VOL are identical, including the volume labels. Take all necessary steps to prevent system problems due to duplicate volumes.
Procedure
In Command Suite:
On the Resources tab, expand the Storage Systems tree, right-click the target storage system and click Remote Replication.
In Device Manager - Storage Navigator:
Click Storage Systems, and then expand the Storage Systems tree.
In the Storage Systems tree, click Replication > Remote Replication.
In the Remote Replication window, click the TC Pairs tab, and then select the pair or pairs to be deleted.
In the Delete Pairs window, ensure that the pairs to be deleted appear in the Selected Pairs table.
For Delete Mode, specify one of the following:
Normal: Deletes the pair only if the primary system can change both P-VOL and S-VOL to unpaired volumes.
Force: Forcibly deletes pairs even when the primary system cannot communicate with the secondary system.
Click Finish.
In the Confirm window, review the settings and enter a task name in the Task Name box.
Click Apply to save your settings.