Backup is the activity or process which is used for copying the all files or databases which is most important to us which is preserved in case of equipment failure or other catastrophe. Backup is usually a routine part of the operation of large businesses with mainframes as well as the administrators of smaller business computers. For personal computer users, backup is also necessary but often neglected. The retrieval of files you backed up is called restoring them. Some new laptop and mobiles are automatically creating their file Backup. Today on the internet google drive or One drive which are used for to storing the information in Backup form. Some new mobile are used own Backup server on the internet.