File systems and storage
AFS - Andrew File System
Your home-directory (ie. the directory pointed to by the $HOME variable) is placed on an AFS file system. This file system is backed up regularly.
Note that since ticket-forwarding to batch jobs does not work, the only AFS-access possible from batch jobs are to read files from your Public-directory which is world-wide readable (yes, the entire world). Use the parallel file system 'pfs' for data management in conjunction with batch jobs.