The Compaq 12/24-GB DAT Autoloader includes an integrated DDS-3 DAT Drive and changer mechanism with convenient access to an eight cassette magazine, allowing you to devise an automatic tape rotation scheme for scheduled backups of servers 24 GB or less.??Reliability is enhanced over previous DAT autoloaders with a new mechanism that offers automated internal head cleaning to sweep away debris. This reliability is noted with an 180,000-hour mean time between failure rating at a 20 percent duty cycle.