In Information Technology, a backup or the process of backing up refers to making copies of data so that these additional copies may be used to restore the original after a data loss event. The verb is back up in two words, whereas the noun is backup.Backups are useful primarily for two purposes. The first is to restore a state following a disaster. The second is to restore small numbers of files after they have been accidentally deleted or corrupted. Data loss is also very common. 67% of internet users have suffered from serious data loss.Since a backup system contains at least one copy of all data worth saving, the data storage requirements are considerable. Organizing this storage space and managing the backup process is a complicated undertaking