564 Implementing the IBM Storwize V7000 with IBM Spectrum Virtualize V8.2.1
In this configuration, if Node A1 fails in System A, IP partnership traffic continues from 
Node A2 (that is, remote copy port group 2) and at the same time the failover also causes 
discovery in remote copy port group 1. Therefore, the IP partnership traffic continues from 
Node A3 on which remote copy port group 1 is configured. The details of the particular IP 
port that is actively participating in IP partnership process is provided in the lsportip 
output (reported as used). 
This configuration has the following characteristics:
– Each node has the remote copy port group that  is configured in the I/O groups 1 or 2. 
However, only one port per system in both remote copy port groups remains active and 
participates in IP partnership. 
– Only a single port per system from each configured remote copy port group 
participates simultaneously in IP partnership. Therefore, both of the links are used. 
– During node failure or port failure of a node that is actively participating in IP 
partnership, IP partnership continues from the alternative port because another port is 
in the system in the same remote copy port group but in a different I/O Group. 
– The pathing algorithm can start discovery of available ports in the affected remote copy 
port group in the second I/O group and pathing is reestablished, which restores the 
total bandwidth, so both of the links are available to support IP partnership. 
/SM590000Eight-node system in IP partnership with a four-node system over dual inter-site links, as 
shown in Figure 11-104 on page 565 (configuration 7).