Data Warehousing and Industry(2) A 1996 study of 62 data warehousing projects showed An average return on investment of 321% with an average payback period of 2.73 years WalMart has largest warehouse 900-CPU, 2,700 disk, 23 TB Teradata system NTTB in warehouse 40-50GB per day 1010 Data Warehousing and Industry (2) • A 1996 study of 62 data warehousing projects showed: – An average return on investment of 321%, with an average payback period of 2.73 years. • WalMart has largest warehouse – 900-CPU, 2,700 disk, 23 TB Teradata system – ~7TB in warehouse – 40-50GB per day