Microsoft Azure Solutions Architect Expert AZ-305 Practice Question
You manage a mission-critical Azure virtual machine that runs SQL Server in the East US region. Management requires a disaster-recovery strategy that meets the following objectives:
Recovery Point Objective (RPO): 15 minutes or less.
Recovery Time Objective (RTO): no more than 2 hours after a regional outage.
Retain daily backups for seven years to satisfy regulatory compliance. You need a solution that minimizes administrative effort while meeting all requirements. Which approach should you recommend?
Schedule managed disk snapshots every 15 minutes and copy the snapshots to a storage account in another region for long-term retention.
Enable Azure Site Recovery to replicate the virtual machine to a secondary Azure region with a 5-minute replication frequency, and configure Azure Backup on the VM to store daily backups in a Recovery Services vault with a seven-year retention policy.
Deploy the VM in an availability set that spans Azure availability zones in East US and configure daily Azure Backup with locally redundant storage for seven years.
Enable Azure Backup with geo-redundant storage and use cross-region restore if the primary region becomes unavailable.
Azure Site Recovery (ASR) replicates Azure virtual machines asynchronously to a secondary region with a default replication frequency of five minutes, easily satisfying a 15-minute RPO. It also provides automated failover and run-book-based recovery, allowing workloads to be brought online in the target region well within a two-hour RTO. Because ASR replication is optimized for short-term disaster recovery, you still need separate long-term data protection. Enabling Azure Backup on the virtual machine and storing the backups in a Recovery Services vault allows daily protection with retention configurable up to ten years, fulfilling the seven-year compliance requirement. The other options fail to meet either the required RPO, the regional-level RTO, or the long-term retention goal.
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Microsoft Azure Solutions Architect Expert AZ-305
Design business continuity solutions
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