Summary Mode is one method for improving system performance. It reduces database I/O by consolidating and summarizing data on each node on the system. Because Summary Mode reduces the availability of detail, you can log normally to tables in which greater detail is needed. Activate Summary Mode individually for the tables in which great detail is not needed.
For more information about Summary Mode and those tables supported in Summary Mode, see Teradata Vantageā¢ - Resource Usage Macros and Tables, B035-1099.