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 BACKUP OR DATA BACKUP

A BACKUP is a copy of important data that is stored on an alternative location, OR

TYPES OF BACKUP

1. FULL BACKUPS

The most basic and complete type of backup operation is a full backup. As the name implies, this type of backup makes a copy of all data to a storage device, such as a disk or tape.

2. INCREMENTAL BACKUPS

An incremental backup operation will result in copying only the data that has changed since the last backup operation of any type. An organization typically uses the modified time stamp on files and compares it to the time stamp of the last backup. Backup applications track and record the date and time that backup operations occur in order to track files modified since these operations.

Because an incremental backup will only copy data since the last backup of any type, an organization may run it as often as desired, with only the most recent changes stored.

3. DIFFERENTIAL BACKUPS

A differential backup operation is similar to an incremental the first time it is performed, in that it will copy all data changed from the previous backup. However, each time it is run afterwards, it will continue to copy all data changed since the previous full backup.

 

SYSTEM BACKUP

A SYSTEM BACKUP is the process of backing up the operating system, files and system-specific useful/essential data. Backup is a process in which the state, files and data of a computer system are duplicated to be used as a backup or data substitute when the primary system data is corrupted, deleted or lost.

BACKUP MEDIA is one of the oldest data ways to store data, using magnetic tape for reading and writing the content.

 

THE PURPOSE OF THE BACKUP is to create a copy of data that can be recovered in the event of a primary data failure. Primary data failures can be the result of hardware or software failure, data corruption, or a human-caused event, such as a malicious attack (virus or malware), or accidental deletion of data.

 

IMPORTANCE OF DATA BACKUP

DATA BACKUP is essential for making your business when you lost the data from main server So, there is alternate option to store data in secondary storage which is part of disaster recovery.