IBM has partnered with an e-commerce services company to sell its <A HREF="http://www.cio.com/blog_view.html?CID=23227">continuous data protection software</A> to consumers and smaller businesses. IBM is now selling Tivoli Continuous Data Protection for Files through Digital River's oneNetwork channel, which operates e-commerce sites for retailers including Circuit City Stores, PC World and Staples. The IBM software backs up data automatically each time changes are made, allowing users to recover earlier versions of a document in the event of a system failure, virus attack or the theft of a computer. The backup can be created to a USB memory stick, external drive or other remote storage system.