Restoration can be performed by the Reverse function of EC or by OPC.
Restoration by reversing EC
The Reverse operation of EC allows high-speed restoration of the pre-update data saved in the secondary destination back to the updated areas of the primary volume. (The Suspended copy session is reversed and then resumed.)
Restoration by OPC
To perform restoration by OPC, start the OPC session in the reverse direction after stopping the EC session. The method using OPC has no advantage over the method using the EC reverse function in that a full copy is required. However, it has the benefit that the original volume can be used immediately after the logical copy has completed.
