AZ-305 Question 114
Single answerA company runs several critical applications on-premises and in Azure. They have strict recovery time objectives (RTO) and recovery point objectives (RPO) of under 30 minutes for both their on-premises servers and Azure VMs. They need a resilient and automated solution that allows quick failover and regular data replication with minimal data loss. Which approach should they implement to meet these objectives?
- A
Implement Azure Site Recovery for replication and orchestrated failover of on-premises and Azure-based virtual machines
- B
Rely on Azure Backup for continuous replication of on-premises and Azure workloads
- C
Use Read-Access Geo-Redundant Storage (RA-GRS) for real-time failover capabilities
- D
Deploy a third-party backup solution that stores snapshots on local disk for rapid restore
Show answer and explanation
Correct answer: A
Explanation
Azure Site Recovery is the recommended solution for disaster recovery across on-premises and Azure workloads when you need to minimize downtime and data loss. By continuously replicating VMs and orchestrating failover through a simplified management portal, ASR meets strict RTO and RPO goals. Microsoft’s documentation (https://learn.microsoft.com/azure/site-recovery/site-recovery-overview) provides detailed guidance on configuring replication, testing failover, and managing disaster recovery strategies.
- A. Correct.
Option 1: Correct. Azure Site Recovery (ASR) is specifically designed for disaster recovery, providing near real-time replication and orchestrated failover capabilities for both on-premises servers and Azure VMs. It allows you to meet strict RTO and RPO requirements by continuously replicating workloads and automating the failover process.
- B. Incorrect.
Option 2: Incorrect. While Azure Backup is excellent for data protection and restoring data from various recovery points, it does not provide near real-time replication or automated failover. Therefore, it is not the best choice if you need to achieve a sub-30-minute RTO and RPO.
- C. Incorrect.
Option 3: Incorrect. RA-GRS provides read access to a secondary copy of data, but it does not offer full disaster recovery capabilities or orchestrated failover. It is a storage-level replication feature, not a comprehensive DR solution for applications or entire workloads.
- D. Incorrect.
Option 4: Incorrect. A third-party local backup solution may handle traditional backups well, but it does not provide the automated, near real-time replication and orchestration required for minimal RTO and RPO. Storing snapshots locally also introduces a single-site risk if the local environment is compromised.