Microsoft Azure Solutions Architect Expert AZ-305 Practice Question
Contoso runs 150 business-critical virtual machines (VMs) on VMware vSphere in a single on-premises datacenter. The company's business-continuity plan states:
A recovery point objective (RPO) of no more than 15 minutes.
A recovery time objective (RTO) of no more than 2 hours if the entire site becomes unavailable. The solution must allow non-disruptive disaster-recovery (DR) drills and automatically reconfigure networking when workloads start in Azure. You need to recommend the most appropriate Azure-based service to meet these requirements while keeping day-to-day operational effort to a minimum. Which service should you recommend?
Implement VMware vSphere Replication to a secondary on-premises site and copy backup files to Azure Blob storage for off-site retention.
Configure Azure Backup to take daily backups of the VMware VMs to a Recovery Services vault in Azure and restore them if a disaster occurs.
Deploy the Azure Migrate appliance and use server replication to Azure, relying on planned failover to recover workloads during a site outage.
Use Azure Site Recovery to replicate the VMware VMs to Azure by installing the Mobility service on each VM and enabling automated failover orchestration.
Azure Site Recovery (ASR) provides continuous replication for on-premises VMware virtual machines to Azure with a target RPO as low as 15 minutes and orchestrated failover that can meet an RTO of hours. ASR includes features such as test failover (for non-disruptive DR drills) and network mapping to automate the configuration of IP addressing when VMs are started in Azure. Azure Backup is designed for point-in-time protection and typically uses daily schedules, so it cannot satisfy the 15-minute RPO or provide automated failover orchestration. VMware vSphere Replication to another on-premises site does not meet the requirement to fail over to Azure, and it would require a secondary datacenter. Azure Migrate supports replication for migration scenarios with a minimum 30-minute replication interval and lacks the automated DR orchestration and drill capabilities required. Therefore, Azure Site Recovery is the only option that fulfills all stated objectives.
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Microsoft Azure Solutions Architect Expert AZ-305
Design business continuity solutions
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