Why is immutable backups emphasized in disaster recovery?

Why is immutable backups emphasized in disaster recovery?

• A. It reduces storage needs
• B. It ensures restore points remain trustworthy in the face of ransomware or corruption
• C. It speeds up restores beyond baseline
• D. It increases backup complexity

Answer: (B)

Immutable backups protect the integrity of your recovery points by preventing changes or deletions during a defined retention window. This means the copies you rely on to restore operations cannot be tampered with by ransomware or data corruption, so you can trust that a restore will reflect the actual pre-attack state. In disaster recovery, that trust is essential because the whole goal is to resume business with data that is known-good and recoverable, not data that has been altered. While immutability can affect storage planning and isn’t a guaranteed way to speed restores, its primary value is preserving the authenticity of restore points. The other options describe benefits that aren’t the main purpose of immutability, such as reducing storage needs, speeding restores, or increasing backup complexity.

Immutable backups protect the integrity of your recovery points by preventing changes or deletions during a defined retention window. This means the copies you rely on to restore operations cannot be tampered with by ransomware or data corruption, so you can trust that a restore will reflect the actual pre-attack state. In disaster recovery, that trust is essential because the whole goal is to resume business with data that is known-good and recoverable, not data that has been altered. While immutability can affect storage planning and isn’t a guaranteed way to speed restores, its primary value is preserving the authenticity of restore points. The other options describe benefits that aren’t the main purpose of immutability, such as reducing storage needs, speeding restores, or increasing backup complexity.