6. Massively Parallel Processing (MPP) system

MPP System

When multiple SMP nodes are connected to form a larger configuration,

we refer to this as a

Massively Parallel Processing (MPP) system.

The

BYNET connects multiple nodes together to create an MPP system.

Because Teradata is a

linearly expandable database system, as

additional nodes and vprocs are added to the system, the system capacity

scales in a linear fashion.

The BYNET can currently support 512 nodes with the capacity to support

2048 nodes in the future.

An MPP system has two BYNET networks (BYNET 0 and BYNET 1).

Because all networks in a system are active, the system benefits from

having full use of the aggregate bandwidth of all the networks. Traffic is

automatically and dynamically distributed between the BYNETs . Since the

number of the networks can be scaled, the performance can also be

scaled to meet the needs of especially demanding applications.

Each BYNET network has multiple connection paths. If the BYNET

detects an unusable path in either network, it will automatically reconfigure

that network so all messages avoid the unusable path. Additionally, in the

rare case that BYNET 0 cannot be reconfigured, hardware on BYNET 0 is
disabled and messages are re-routed to BYNET 1, and vice versa.