The Andrew File System was developed as part of the AndrewProject

• The Andrew File System is a NetworkFileSystem
• The Andrew File System doesn't use traditional Unix permissions, but instead uses full ACL's
• The Andrew File System supports having multiple replicated servers allowing for high Reliability and Availability
• The Andrew File System uses Kerberos for Authentication
• AFS can also dedicate part of your local machine for caching files allowing for very fast access to files even if you have a slow link to the AFS servers.
• Originally called "Vice" (the Andrew Toolkit was known as 'Virtue')
• AFS originally copied entire files over when you edited them, this was slow for large files, however this has been fixed now for a while.

Information about setting up OpenAFS under Debian: http://www.debianplanet.org/node.php?id=816