You can use System Manager to reestablish a mirror relationship that was previously broken. In a reverse resynchronization operation, you reverse the functions
of the source and destination.
Before you begin
The source volume must be online.
About this task
You can use the destination volume to serve data while you repair or replace the source, update the source, and reestablish the original configuration of the systems.
When you perform reverse resynchronization, the contents on the mirror source are overwritten by the contents on the destination.
Attention: This operation can cause data loss on the source.
When you perform reverse resynchronization, the mirror policy of the relationship is set to DPDefault and the mirror schedule is set to None.
Procedure
Click Protection > Relationships.
Select the mirror relationship that you want to reverse.
Click Operations
> Reverse Resync.
Select the confirmation check box, and click Reverse Resync.