The initial versions of Backup were regarded as feature-sparse and frequently unstable. However, by late-2003 Apple had rolled out several bug fixes and a beta of Backup 2.0, which promised to be far more reliable than its predecessors.
Though both allow for the creation of archive copies of important data, Backup is seen as not being feature-rich enough to compete with full-fledged backup programs such as Retrospect by Dantz