Backup describes the process of creating and storing copies of data that can be used to protect organizations from data loss. This is also called operational recovery. Restoring from a backup usually involves restoring data to its original location or to another place where it can be used instead of lost or damaged data.

A good backup is stored in a separate system or on a medium, such as tape, of primary data in order to protect them from data loss due to errors in the main equipment or software.

Keeping a copy of the data on a separate medium is critical to protecting against the initial loss or corruption of data.

ackup refers to copying physical or virtual files or databases to secondary storage for safe storage in the event of equipment malfunction or disaster.

For best results, backups are created on a regular basis to minimize the amount of data lost between backups. The more time elapses between backups, the greater the likelihood of data loss when restoring a backup. Saving multiple copies of the data provides a guarantee and the flexibility to recover in a time not affected by data corruption or malicious attacks.

There are 3 types of backups:

Full backups

Incremental backup

Differential backup