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An automatic backup system is a system that allow for the recovery of information stored on computers. Automatic backups are necessary in order to back up stored data and to enable data recovery should the system crash. By automating a backup through a regular backup system, the user doesn't have to protect data manually.
Hard drives often fail, which is why automatic backup systems are put in place. Automatic backup systems assume that some fault will cause data loss. In other words, data archives help prevent data loss whereas backup systems work in a secondary manner, making a second (or more) set of copies for the purpose of data restoration from data losses that are fully expected.
A successful automatic backup system will be immune to situations that could occur at the hard drives' physical location, such as fire, floods and other natural disasters. This is why automatic backup systems should be remote, and data restoration and retrieval should be located away from the original data storage location.