Teradata ARC creates files when databases, individual data tables, selected partitions of primary partition index (PPI) tables, or permanent journal tables from the Teradata Database are archived. When those objects are restored to the Teradata Database, the Teradata ARC files are also restored.
Teradata ARC also includes recovery with rollback and rollforward functions for data tables defined with a journal option. Checkpoint these journals with a synchronization point across all AMPs, and delete selected portions of the journals.