C2C announced the availability of Archive One Policy version 4.2, a major application upgrade with advances in storage capacity management and administrator security levels. <A HREF="http://www.c2c.com/site/news/2004/21_11_05.htm">Archive One Policy 4.2</A> identifies storage efficiencies at the attached file level to provide savings to organizations. One new feature, SIS Plus (Single Instance Storage Plus), looks at the true cause of wasted storage volumes in the archive--email attachment files--and identifies unique email attachments for a single instance store, rather than the email messages that contain them.