For BYNET-over-Ethernet configurations, the SAS HPA appliance connects to Teradata systems through the Teradata Connect nodes in the SAS HPA appliance cabinet.
SAS Cluster to Teradata Network Topology (BYNET over Ethernet)
For BYNET-over-InfiniBand (BYNET V5) configurations, the Teradata Connect nodes are not required.
SAS Cluster to Teradata Network Topology (BYNET over InfiniBand, No Connect Nodes)