HA pairs provide high availability because one system in the
HA pair can take over if its partner fails. During failover, the working system assumes the IP addresses of the failed partner and can continue to support iSCSI LUNs.
The two systems in the HA pair should have identical networking hardware with equivalent network configurations. The target portal group tags associated with each networking interface must be the same on both systems in the configuration. This ensures that the hosts see the same IP addresses and target portal group tags whether connected to the original storage system or connected to the partner during failover.
