AZ-305 Design business continuity solutions Practice Question
A company has a disaster recovery plan that requires testing failover of Azure VMs regularly without impacting the production environment. Which feature of Azure Site Recovery should they use?
⚠ Common exam trap
Many candidates confuse 'test failover' with 'planned failover' because both involve controlled processes, but planned failover is intended for actual migration or maintenance and does impact production by shutting down source VMs, whereas test failover is purely for validation with zero production impact.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Test failover
Test failover (Option B) is the correct feature for validating disaster recovery readiness without affecting the production environment. Azure Site Recovery's test failover creates an isolated copy of the replicated VMs in a separate virtual network, allowing you to run validation exercises, perform application testing, and verify recovery plans without any impact on the production VMs or ongoing replication. This ensures that the failover process works correctly while maintaining production continuity.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Planned failover
Why it's wrong here
Planned failover is an intentional, controlled process typically executed for migration, maintenance, or other scheduled activities where downtime is coordinated. It does not satisfy disaster recovery testing requirements because it operates on the production environment and can affect live workloads, whereas a test must be isolated and non-disruptive. Therefore, it is incorrect for this scenario.
- ✓
Test failover
Why this is correct
Test failover is the correct choice because it creates an isolated, non-production replica of the protected environment, allowing validation of recovery procedures without impacting live systems. It provides a safe, reversible mechanism to verify that recovery points and recovery time objectives can be met, making it the standard method for disaster recovery testing.
- ✗
Unplanned failover
Why it's wrong here
Unplanned failover is triggered automatically or manually in response to an actual disaster or critical failure, and it transitions production operations to the replica site. It is a real, high-stakes operation that should not be used for routine testing because it risks data loss, downtime, and unintended production impact. Hence, it is not appropriate for a scheduled DR test.
- ✗
Failback
Why it's wrong here
Failback is the process of returning workloads to the primary site after a failover has occurred, often requiring replication reversal and synchronization. It is not a testing procedure but a post-disaster recovery step, and using it for testing could cause unnecessary production disruption. Therefore, it is incorrect for validating disaster recovery readiness.
Go deeper
Related to this question
Learn chapter
Azure Site Recovery Design
Key term
Disaster Recovery Design
Disaster Recovery Design is the process of planning and implementing strategies to restore IT systems and data after a catastrophic failure, ensuring business continuity with minimal downtime and data loss.
Key term
Azure Site Recovery
Azure Site Recovery is a Microsoft Azure service that keeps your business applications and data running by automatically replicating them to a secondary location and failing over if the primary site goes down.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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