<aside> <img src="/icons/wrench_gray.svg" alt="/icons/wrench_gray.svg" width="40px" /> Data Backup is the process of creating duplicate copies of digital information to protect against data loss, corruption or unavailability. It safeguards data from accidental deletion or system failures

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Onsite and Offsite Backups

Onsite Backup — Storing data copies in the same location as the original data

Offsite Backup — Storing data copies in a geographically separate location

IMPORTANCE — Onsite backups are convenient but vulnerable to disasters. Offsite backups protect against physical disasters

Backup Frequency

• Determining factor of backup frequency is the organization’s RPO
• Recovery Point Objective (RPO)
  • Ensures that the backup plan will maintain the amount of data required to keep any data loss under the organization’s RPO threshold
• Considerations
  • Data change rate
  • Resource allocation
  • Organizational needs

Encryption

Fundamental safeguard that protects the backup data from unauthorized access and potential breaches

• Data-at-rest Encryption — Encrypting data as it is written to storage
• Data-in-transit Encryption — Protecting data during transmission
• IMPORTANCE — Safeguarding backup data from unauthorized access and breaches

Snapshots

• Point-in-time copies capturing a consistent state
• Records only changes since the previous snapshot, reducing storage requirements
• Use cases — Valuable for systems where data recovery is critical like databases and file servers

Data Recovery

Several key steps in the data recovery process: