It backs up your GNU/Linux server or workstation to tape, CD-R, CD-RW, NFS or hard disk partition. In the event of catastrophic data loss, you will be able to restore all of your data [or as much as you want], from bare metal if necessary. Mondo is in use by Lockheed-Martin, Nortel Networks, Siemens, HP (US and France), IBM, NASA's JPL, the US Dept of Agriculture, dozens of smaller companies, and tens of thousands of users.