text: **11.7.8 Changing Metro Mirror/Global Mirror consistency group**
  
  Use the**chrcconsistgrp**command to change the name of an MM/GM Consistency Group. 
  
  **11.7.9 Starting Metro Mirror/Global Mirror relationship**
  
  Use the**startrcrelationship**command to start the copy process of an MM/GM relationship. 
  
  When the command is issued, you can set the copy direction if it is undefined. Optionally, you 
  can mark the auxiliary volume of the relationship as clean. The command fails if it is used as 
  an attempt to start a relationship that is already a part of a consistency group. 
  
  You can issue this command only to a relationship that is connected. For a relationship that is 
  idling, this command assigns a copy direction (master and auxiliary roles) and begins the 
  copy process. Otherwise, this command restarts a previous copy process that was stopped 
  by a**stop**command or by an I/O error. 
  
  If the resumption of the copy process leads to a period when the relationship is inconsistent, 
  you must specify the**-force**parameter when the relationship is restarted. This situation can 
  arise if, for example, the relationship was stopped and then further writes were performed on 
  the original master of the relationship. 