Chapter 11. Advanced Copy Services 557
As shown in Figure 11-98 on page 556, there are two systems:
– System A
– System B
A single remote copy port group 1 is created on Node A1 on System A and on Node B2 on 
System B because there is only a single inter-site link to facilitate the IP partnership traffic. 
An administrator might choose to configure the remote copy port group on Node B1 on 
System B rather than Node B2. 
At any time, only the IP addresses that are configured in remote copy port group 1 on the 
nodes in System A and System B participate in establishing data paths between the two 
systems after the IP partnerships are created. In this configuration, no failover ports are 
configured on the partner node in the same I/O group. 
This configuration has the following characteristics:
– Only one node in each system has a remote copy port group that is configured, and no 
failover ports are configured. 
– If the Node A1 in System A or the Node B2 in System B were to encounter a failure, the 
IP partnership stops and enters the Not_Present state until the failed nodes recover. 
– After the nodes recover, the IP ports fail back, the IP partnership recovers, and the 
partnership state goes to the Fully_Configured state. 
– If the inter-site system link fails, the IP partnerships change to the Not_Present state. 
– This configuration is not re commended because it is not resilient to node failures. 
/SM590000Two 2-node systems in IP partnership over a single inter-site link (with failover ports 
configured), as shown in Figure 11-99 (configuration 2).
Figure 11-99   One remote copy group on each system and nodes with failover ports configured