The Library of Congress, along with the California Digital Library and Stanford University, have "developed guidelines for creating and moving standardized digital containers, called “bags.” A bag functions like a physical envelope that is used to send content through the mail but with bags, a user sends content from one computer to another." In order to explain BagIt, the LOC has released a video on its web site and a transcript of the video is also available.
The tools are available for download via SourceForge. Documentation is available on the LOC web site.
Technorati tag: Digital Preservation