A lot of companies are developing solutions for the problem of big data.  However, these solutions tend to deal with how to effectively analyze big data.  What about the problem of how to retain big data over time?  Deirdre Mahon wrote a good article about this in the May issue of DBTA.  You can read about it here: http://www.dbta.com/Articles/Editorial/Trends-and-Applications/Cost-Effective-Big-Data-Retention-Enables-Better-Analytics-75457.aspx.  It seems that Teradata and RainStor have brought a joint solution to market for this: http://www.teradata.com/t/News-Releases/2010/Teradata-Partners-with-RainStor-for-Big-Data-Retention-and-Retrieval-at-a-Low-Cost/.