Why is offsite or air-gapped backup important for disaster recovery?

Why is offsite or air-gapped backup important for disaster recovery?

• A. It protects against site disasters and ransomware by ensuring backups are unavailable to attackers and inaccessible from the primary network.
• B. It speeds up daily backups within the primary site.
• C. It reduces network latency for backups.
• D. It eliminates the need for backup testing.

Answer: (A)

Offsite or air-gapped backups are about ensuring data survivability by isolating copies from the primary environment. When backups are stored offsite or kept offline, they are not reachable over the network, which prevents ransomware from encrypting them and protects against attacks that occur at the main site. This separation also guards against site-level disasters (fire, flood, power loss) that could destroy local backups. Having a clean, independent copy elsewhere allows you to restore systems and data reliably, helping you meet recovery objectives after a disaster. The other aspects—speeding up daily backups, reducing network latency, or eliminating the need for backup testing—aren’t the primary purpose of offsite or air-gapped backups. Those are separate factors to consider in a complete disaster-recovery strategy, and testing remains essential even with offsite backups.

Offsite or air-gapped backups are about ensuring data survivability by isolating copies from the primary environment. When backups are stored offsite or kept offline, they are not reachable over the network, which prevents ransomware from encrypting them and protects against attacks that occur at the main site. This separation also guards against site-level disasters (fire, flood, power loss) that could destroy local backups. Having a clean, independent copy elsewhere allows you to restore systems and data reliably, helping you meet recovery objectives after a disaster.

The other aspects—speeding up daily backups, reducing network latency, or eliminating the need for backup testing—aren’t the primary purpose of offsite or air-gapped backups. Those are separate factors to consider in a complete disaster-recovery strategy, and testing remains essential even with offsite backups.