What is backup?
A backup copy is a duplicate instance of a data file, application, system, or server that was created using backup software. It is used to restore original data in case it is deleted, damaged or lost.
A backup copy is similar to the data being backed up and is usually stored on an external backup storage medium / medium.
A backup copy is also known as a backup file.
A backup copy is a duplicate version of all data and is the only issue of a backup process / software. Typically, the backup copy is the same version, size, and type as the original data. For a full system or database backup, this can be a snapshot image file that consists of all the data and settings required to restore the system to its last saved state. A backup copy is also used as a means of maintaining data redundancy.