...and just a few points-of-sale. The Wal-Mart data warehouse operation is legendary in the industry. As of 2008, they were running Teradata, w/ 2.5 PB of data

...and just a few points-of-sale. The Wal-Mart data warehouse operation is legendary in the industry. As of 2008, they were running Teradata, w/ 2.5 PB of data: http://www.dbms2.com/2008/10/15/teradatas-petabyte-power-players/ http://www.dbms2.com/2008/10/15/teradatas-petabyte-power-pla... By comparison, Facebook had ~2.5 PB in Hadoop/Hive in early 2009: http://www.dbms2.com/2009/05/11/facebook-hadoop-and-hive/ http://www.dbms2.com/2009/05/11/facebook-hadoop-and-hive/