Lesson 44: Notions on Backup

Data Loss, Backup and Recovery

• Data loss: the loss of important data due to various reasons (hardware failure, deletion, etc.).
• Backup: creating a copy of important data to prevent loss.
• Recovery: restoring lost data from a backup.

Data loss can occur due to hardware failure, software corruption, or human error. Backup and recovery ensure that important data is safe and can be restored in case of loss.

Backup Media

• External hard drives
• USB drives