text: **The chpartnership command**
  To change the bandwidth that is available for background copy in the system partnership, use 
  the**chpartnership -backgroundcopyrate <*percentage_of_link_bandwidth>***command to 
  specify the percentage of whole link capacity to be used by the background copy process. 
  
  **11.7.5 Creating a Metro Mirror/Global Mirror consistency group**
  
  Use the**mkrcconsistgrp**command to create an empty MM/GM Consistency Group. 
  
  The MM/GM consistency group name must be unique across all consistency groups that are 
  known to the systems owning this consistency group. If the consistency group involves two 
  systems, the systems must be in communication throughout the creation process. 
  
  The new consistency group does not contain any relationships and is in the Empty state. You 
  can add MM/GM relationships to the group (upon creation or afterward) by using the 
  **chrelationship**command. 
  
  **11.7.6 Creating a Metro Mirror/Global Mirror relationship**
  
  Use the**mkrcrelationship**command to create a MM/GM relationship. This relationship 
  persists until it is deleted. 
  
  **Optional parameter:**If you do not use the**-global**optional parameter, a Metro Mirror 
  relationship is created rather than a Global Mirror relationship. 