The recommended sequence of steps for setting up a global Mirror configuration is as follows.
Figure 1. Setting Up Global Mirror for ESS
- 1 Use the PPRC Establish Path command to establish FCP paths between the LSSs that will contain the PPRC primaries and the LSSs that will contain the PPRC secondaries.
- 2 Use the PPRC Establish Pair command to establish PPRC-XD pairs that will participate in the session, specifying COPY in the MODE parameter.
- 3 Use the FlashCopy® Establish command to establish FlashCopy relationships between the PPRC secondaries and their targets specifying ASYNC in the MODE parameter.
- 4 Use the PPRC Establish Path command to establish FCP paths between the intended master and intended subordinate ESSs that will be participating in the session.
- 5 Use the RSESSION DEFINE command to define the session (session ID created) to the LSSs in the master that will control the session.
- 6 Use the RSESSION DEFINE command to define the session to the LSSs in subordinate storage controls that are to participate in the session.
- 7 Issue an RSESSION START command to the master, specifying the topology and performance parameters for the session.
- 8 Use the RVOLUME JOIN command to populate the session with volumes.