ExpertHard1 markMultiple Choice
Domain 3.1: Backup and Disaster RecoveryDomain 3Azure Site RecoveryDisaster RecoveryMulti-VM Consistency
AZ-305 · Question 31 · Domain 3.1: Backup and Disaster Recovery
You are designing a disaster recovery strategy using Azure Site Recovery (ASR) for a complex, multi-tier application hosted on Azure Virtual Machines.
The application consists of a web tier, an application tier, and a database tier. If a failover occurs, it is absolutely critical that all VMs across all tiers are recovered to the exact same point in time to prevent data corruption and application state mismatch.
Which ASR feature must you configure?
You are designing a disaster recovery strategy using Azure Site Recovery (ASR) for a complex, multi-tier application hosted on Azure Virtual Machines.
The application consists of a web tier, an application tier, and a database tier. If a failover occurs, it is absolutely critical that all VMs across all tiers are recovered to the exact same point in time to prevent data corruption and application state mismatch.
Which ASR feature must you configure?
Answer options:
A.
Crash-consistent recovery points
B.
App-consistent recovery points
C.
Multi-VM consistency
D.
Azure Traffic Manager routing
How to approach this question
Look for the feature specifically designed to group multiple VMs together for synchronized replication.
Full Answer
C.Multi-VM consistency✓ Correct
Multi-VM consistency
Azure Site Recovery supports Multi-VM consistency. When you enable this feature, you group multiple VMs together into a replication group. ASR ensures that all machines in the group share the same crash-consistent and app-consistent recovery points. This is critical for multi-tier applications (like SAP or complex web apps) where the database and application servers must be restored to the exact same millisecond to function correctly.
Common mistakes
Choosing App-consistent recovery points. While important, app-consistency alone applies to individual VMs. Multi-VM consistency is required to synchronize multiple VMs.
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