System Topology for 3-Cabinet Systems up to 36 Nodes - Data Warehouse Appliances

Three-cabinet systems can accommodate second-tier switches, but second-tier switches are not required. The purpose of the second-tier switch is to interconnect the first-tier switches and provide the connection point for the uplinks that connect to the UDA fabric. A second-tier switch also allows for future expansion to additional nodes and cabinets.

3-Cabinet System With Second-Tier Switches

When second-tier switches are installed, they are located in Cabinet 2 in 3-cabinet systems.

This configuration allows for connection to the UDA, and for future expansion beyond 36 nodes.

• The system consists of up to three cabinets.
• The first cabinet contains 2850 processing nodes (2-node or 4-node cliques) and may contain additional systems (680, 2800, or 2850 systems).
• The other cabinets contain 2850 processing nodes (2-node or 4-node cliques).
• The first cabinet contains a System VMS for server management, and may contain additional TMSs.
• Each additional cabinet may contain a Cabinet VMS for server management.
• 36-port InfiniBand switches in cabinets 1 and 3 provide node-to-switch connections for the redundant InfiniBand networks (Network-0 and Network-1). Connections are shown in the figure. Each node contains a dual port InfiniBand adapter that connects to the InfiniBand switches.
• Eight ports on each of the InfiniBand switches in Cabinets 1 and 3 are used to provide the uplink connections to the second-tier switch.
• When connected to a UDA network, the second-tier switches can be used for UDA connections. For more information, see the Teradata Unified Data Architecture InfiniBand and Server Management Configuration Guide, B035-6001.
• For port-to-port cabling, see the appropriate Hardware Installation Guide.

3-Cabinet System Without Second-Tier Switches

This configuration provides for up to 36 nodes, but is not easily expandable, and does not provide connection to the UDA.

• The system consists of up to three cabinets.
• The first cabinet contains 2850 processing nodes (2-node or 4-node cliques) and may contain additional systems (680, 2800, or 2850 systems).
• The other cabinets contain 2850 processing nodes (2-node or 4-node cliques).
• The first cabinet contains a System VMS for server management, and may contain additional TMSs.
• Each additional cabinet may contain a Cabinet VMS for server management.
• 36-port InfiniBand switches in cabinet 1 provide node-to-switch connections for the redundant InfiniBand networks (Network-0 and Network-1). Connections are shown in the figure. Each node contains a dual port InfiniBand adapter that connects to the InfiniBand switches.
• For port-to-port cabling, see the appropriate Hardware Installation Guide.