Why are immutable backups important for disaster recovery?

• A. They prevent attackers from altering backups, ensuring restore points remain intact and trustworthy
• B. They reduce storage requirements
• C. They automatically verify recovery scripts
• D. They accelerate backup speed

Answer: (A)

Immutable backups protect backup integrity by making restore points unmodifiable for a defined period. This means that even if attackers gain access to the system or ransomware tries to delete or alter backups, the stored restore points remain intact and trustworthy. In disaster recovery, having untampered, known-good backups is essential to restore operations to a clean state and minimize downtime. The main benefit is safeguarding the evidence of good backups and ensuring recoverability, not directly reducing storage, automating script verification, or speeding up backups. Those aspects involve separate technologies or processes.