What is the purpose of a backup strategy in disaster recovery?

• A. To reduce network bandwidth usage.
• B. Ensure data availability and business continuity; includes RPO/RTO, backup types, and offsite storage.
• C. To improve user experience by providing automated restores.
• D. To replace the need for disaster recovery planning.

Answer: (B)

The purpose of a backup strategy in disaster recovery is to ensure data availability and business continuity by defining how data is protected, how quickly it can be restored, and where copies are kept. It translates business needs into measurable targets like Recovery Point Objective (RPO), which determines how much data you can afford to lose, and Recovery Time Objective (RTO), which sets how quickly services must be back online. It also covers the types of backups (full, incremental, differential, synthetic full), how often they’re performed, how long they’re retained, and where copies reside—ideally offsite or in the cloud—to withstand site-level failures. Regular testing of restores validates that the plan actually works when needed. While features like automated restores can aid the process, the core aim is ensuring data can be recovered and operations can continue; backups alone do not replace comprehensive disaster recovery planning.