A major purpose of peer-to-peer remote copy is to enable you to switch to a recovery system in the event of a disaster to the primary system. This topic presents an overview of disaster recovery from a system viewpoint and describes the procedure to direct the recovery system to take over for the primary system.
PPRC is also an excellent solution for moving data between disk devices. You might want to have a data migration procedure for planned activity, rather than for a disaster. A data migration procedure is a subset of the recovery procedure that is described in this topic.
For additional information about using PPRC for data migration, refer to Moving and migrating data with Peer-to-Peer Remote Copy.