Automatically calculate the number of tapes or diskettes that are needed for backing up file systems. You can use the dry run mode (S option) to determine how much space is needed before actually backing up file systems.
Provide built-in error checking to minimize problems when it backs up an active file system.
Back up files that are remotely mounted from a server. Files on the server must be backed up on the server itself. Users are denied permission to run the ufsdump command on files they own that are located on a server.