Use the Change Copy Priority option in the to select the rate at which a completes for a selected . You can change the for a copy pair at any of these times:
Note:
There are five copy priority rates available: lowest, low, medium, high, and highest. If the copy priority is set at the lowest rate, I/O activity is prioritized and the VolumeCopy takes take longer. If the copy priority is set to the highest priority rate, the VolumeCopy is prioritized, but I/O activity for the might be affected.