Microsoft Azure Solutions Architect Expert AZ-305 Practice Question
Your organization hosts a mission-critical Windows Server virtual machine (VM) in Azure. Business continuity requirements state that if the primary Azure region becomes unavailable, the workload must be started in another Azure region within 2 hours and with no more than 15 minutes of data loss. The operations team also wants the simplest possible ongoing management. Which approach should you recommend?
Enable Azure Site Recovery for the VM, replicating it to a secondary Azure region with a 15-minute replication frequency and planned failover orchestration.
Place the VM in an availability set and convert its managed disks to zone-redundant storage (ZRS).
Schedule an Azure Automation runbook to create snapshots of the VM's managed disks every 15 minutes and copy them to a storage account in another region.
Configure Azure Backup to take daily backups of the VM and enable cross-region restore (CRR).
Azure Site Recovery (ASR) is designed for disaster-recovery of Azure VMs. It continuously replicates disk writes to a secondary region, typically achieving recovery-point objectives of under a few minutes, and provides built-in failover orchestration so the VM can be brought online quickly-well within a 2-hour recovery-time objective. Azure Backup with cross-region restore, managed-disk snapshots, or zone-redundant storage do not meet the 15-minute RPO requirement: Azure Backup creates daily recovery points, snapshot copy jobs require custom automation and management overhead, and ZRS plus an availability set protects only against single-datacenter or zone failures, not complete regional outages. Therefore, enabling Azure Site Recovery with a 15-minute (or lower) replication frequency best satisfies both the RPO/RTO targets and the low-maintenance goal.
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Microsoft Azure Solutions Architect Expert AZ-305
Design business continuity solutions
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