fbpx

Teradata Hot Standby Node Explained

By DWH Pro Admin

December 6, 2019


A hot standby node is a member of a group of nodes (clique), and no virtual processes are running on it (AMPs, Parsing Engines).

The hot standby node waits for its mission, which occurs when a node crashes out of its clique.

Then all the AMPs of the crashed node are immediately migrated to the hot standby node. This happens practically without any loss of performance:

Teradata Hot Standby Node Explained 1
Node crashes, migration of AMPs takes place

The ingenious thing about the design is the following: As soon as the crashed node is online again, it becomes the new hot standby node:

Teradata Hot Standby Node Explained 2
Recovered Node becomes the new HSN
Buy now at Amazon
{"email":"Email address invalid","url":"Website address invalid","required":"Required field missing"}

You might also like

>