Which type of data replication is required for a company using a hot-site disaster-recovery model?

Which type of data replication is required for a company using a hot-site disaster-recovery model?

• A. Incremental
• B. Full
• C. Real-time
• D. Snapshot

Answer: (A)

In a hot-site disaster-recovery model, real-time data replication is crucial to ensure that operations can continue seamlessly in the event of a primary site failure. Real-time replication continuously updates the hot site's data, mirroring changes from the primary site almost instantly. This minimizes data loss and downtime by maintaining an up-to-date copy of essential data that is immediately ready for use. Incremental replication, on the other hand, only transfers changes made since the last backup, which can lead to delays in recovery. Full replication would involve copying all data, which is less efficient than continuous updates and may not be feasible for large datasets in a real-time recovery scenario. Snapshot replication creates point-in-time copies of data, which can also limit the ability to recover to the most recent state, making it less suitable for a hot-site setup where minimal downtime and data loss are critical. Therefore, real-time replication is the ideal choice for maintaining high availability and business continuity in this context.

In a hot-site disaster-recovery model, real-time data replication is crucial to ensure that operations can continue seamlessly in the event of a primary site failure. Real-time replication continuously updates the hot site's data, mirroring changes from the primary site almost instantly. This minimizes data loss and downtime by maintaining an up-to-date copy of essential data that is immediately ready for use.

Incremental replication, on the other hand, only transfers changes made since the last backup, which can lead to delays in recovery. Full replication would involve copying all data, which is less efficient than continuous updates and may not be feasible for large datasets in a real-time recovery scenario. Snapshot replication creates point-in-time copies of data, which can also limit the ability to recover to the most recent state, making it less suitable for a hot-site setup where minimal downtime and data loss are critical. Therefore, real-time replication is the ideal choice for maintaining high availability and business continuity in this context.