You can specify the default value for free space left on a cylinder during certain operations on a table-by-table basis by specifying the FREESPACE parameter in the CREATE TABLE and ALTER TABLE requests.
This option enables you to select a different value for tables that are constantly modified versus tables that are only read after they are loaded. To specify the global free space value, use the FreeSpacePercent command of the DBS Control utility (see Teradata Vantage™ - Database Utilities, B035-1102).