Teradata Database provides the following facilities for hardware fault tolerance.
Facility |
Description |
Multiple BYNETs |
Multinode Teradata Database servers are equipped with at least two BYNETs. Interprocessor traffic is never stopped unless all BYNETs fail. Within a BYNET, traffic can often be rerouted around failed components. |
RAID disk units |
Non-array storage cannot use RAID technology. |
Multiple client-server connections |
In a client-server environment, multiple connections between mainframe and workstation-based clients ensure that most processing continues even if one or several connections between the clients and server are not working. Vproc migration is a software feature supporting this hardware issue. |
Isolation from client hardware defects |
In a client-server environment, a server is isolated from many client hardware defects and can continue processing in spite of such defects. |
Power supplies and fans |
Each cabinet in a configuration has redundant power supplies and fans to ensure fail-safe operation. |
Hot swap capability for node components |
Teradata Database can allow some components to be removed and replaced while the system is running. This process is known as hot swap. Teradata Database offers hot swap capability for the following: |
Cliques |
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For more information on the topics presented in this chapter, see the following Teradata Database and Teradata Tools and Utilities books.
IF you want to learn more about… |
See… |
Software Fault Tolerance, including: |
|
Hardware Fault Tolerance |
Database Design |