Figure 11-100 Multinode systems single inter-site link with only one remote copy port group As shown in Figure 11-100, there are two 4-node systems:  A single remote copy port group 1 is configured on nodes A1, A2, A3, and A4 on System  A, Site A; and on nodes B1, B2, B3, and B4 on System B, Site B. Although four ports are  configured for remote copy group 1, only one Ethernet port in each remote copy port  group on each system actively participates in the IP partnership process.  Port selection is determined by a path configuration algorithm. The other ports play the  role of standby ports. If Node A1 fails in System A, the IP partnership selects one of the remaining ports that is  configured with remote copy port group 1 from any of the nodes from either of the two I/O  groups in System A. However, it might take some time (generally seconds) for discovery  and path configuration logic to reestablish paths post failover. This process can cause  partnerships to change to the  Not_Present  state.  This result causes remote copy relationships to stop. The administrator might need to  manually verify the issues in the event log and start the relationships or remote copy  consistency groups, if they do not autorecover. The details of the particular IP port actively  participating in the IP partnership process is provided in the  lsportip  view (reported as  used ).  This configuration has the following characteristics: – Each node has the remote copy port group that is configured in both I/O groups.  However, only one port in that remote copy port group remains active and participates  in IP partnership on each system.  – System B – System A Chapter 11. Advanced Copy Services  559