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A copy of all or portions of software or data files on a system kept on storage media.
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A copy of all or portions of software or data files on a system kept on storage media, such as tape or disk, or on a separate system so that the files can be restored if the original data is deleted or damaged [SAA]. Also refers process of creating such a copy. In contrast to an “archive”, a backup is intended for the short-term recovery of data and may be in a format that is not easily accessible without the use of specific software.