- A
Configure Azure SQL Managed Instance with an auto-failover group to a secondary instance in North Europe.
Auto-failover groups provide synchronous replication with automatic failover, low RPO/RTO, and allow read-only queries on the secondary.
- B
Enable read-access geo-redundant storage (RA-GRS) on the storage account hosting the database files.
Why wrong: RA-GRS is for Azure Blob Storage, not for SQL Managed Instance database files. It does not provide automatic failover for SQL workloads.
- C
Deploy SQL Server Always On Availability Groups with a synchronous replica in North Europe.
Why wrong: Always On Availability Groups can be configured on SQL Server VMs, but SQL Managed Instance already has built-in high availability. This option adds unnecessary management overhead and does not integrate with the PaaS service.
- D
Use Azure Site Recovery to replicate the SQL Managed Instance to a secondary region as a virtual machine.
Why wrong: Azure Site Recovery is for replicating IaaS workloads, not PaaS databases like SQL Managed Instance. It would require deploying SQL Server on VMs, which is not the same service.
Quick Answer
The answer is to configure Azure SQL Managed Instance with an auto-failover group to a secondary instance in North Europe. This is correct because auto-failover groups leverage synchronous replication between paired regions, ensuring an RPO of less than 5 seconds and an RTO under 1 minute, while the secondary region can serve read-only queries via the listener’s read-only endpoint or the `-AllowReadOnlyFailoverToSecondary` parameter. On the AZ-305 exam, this scenario tests your understanding of high-availability and disaster recovery design for managed instances, often appearing as a trap where candidates mistakenly choose geo-replication for SQL Database instead of the auto-failover group specific to SQL Managed Instance. Remember that for SQL Managed Instance, auto-failover groups are the only native cross-region solution meeting sub-minute RTO and synchronous RPO, while geo-replication applies only to Azure SQL Database. A useful memory tip: think “MIG” for Managed Instance Groups—if you see “Managed Instance” paired with “cross-region failover,” auto-failover groups are the answer.
AZ-305 Design business continuity solutions Practice Question
This AZ-305 practice question tests your understanding of design business continuity solutions. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company runs a critical application that uses Azure SQL Managed Instance in the West Europe region. They need to ensure that the database remains available if a regional failure occurs. The solution must provide automatic failover with an RPO of less than 5 seconds and an RTO of less than 1 minute. The secondary region must also be able to serve read-only queries for reporting purposes. Which Azure service should they use?
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
Configure Azure SQL Managed Instance with an auto-failover group to a secondary instance in North Europe.
Azure SQL Managed Instance supports auto-failover groups, which enable automatic, synchronous replication of databases to a secondary instance in a paired region (North Europe). This provides an RPO of less than 5 seconds (synchronous commit) and an RTO of under 1 minute, while the secondary can be used for read-only queries by adding the `-AllowReadOnlyFailoverToSecondary` parameter or using the listener's read-only endpoint. This meets all stated requirements for regional failover, low RPO/RTO, and read-only reporting.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Configure Azure SQL Managed Instance with an auto-failover group to a secondary instance in North Europe.
Why this is correct
Auto-failover groups provide synchronous replication with automatic failover, low RPO/RTO, and allow read-only queries on the secondary.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Enable read-access geo-redundant storage (RA-GRS) on the storage account hosting the database files.
Why it's wrong here
RA-GRS is for Azure Blob Storage, not for SQL Managed Instance database files. It does not provide automatic failover for SQL workloads.
- ✗
Deploy SQL Server Always On Availability Groups with a synchronous replica in North Europe.
Why it's wrong here
Always On Availability Groups can be configured on SQL Server VMs, but SQL Managed Instance already has built-in high availability. This option adds unnecessary management overhead and does not integrate with the PaaS service.
- ✗
Use Azure Site Recovery to replicate the SQL Managed Instance to a secondary region as a virtual machine.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Azure SQL Managed Instance's auto-failover groups with SQL Server Always On Availability Groups on IaaS VMs, or mistakenly think storage-level replication (RA-GRS) can provide database-level failover with sub-minute RTO.
Detailed technical explanation
How to think about this question
Auto-failover groups for Azure SQL Managed Instance use the Availability Zones concept at the region level, leveraging the HADR (High Availability Disaster Recovery) architecture with a distributed availability group that synchronously commits transactions to the secondary replica. The RPO of less than 5 seconds is achieved because synchronous commit ensures no data loss, but in practice, the actual RPO is zero for transactions committed before failover; the RTO is driven by the time to detect failure and redirect connections via the failover group listener. A subtle behavior: if you enable the `-AllowReadOnlyFailoverToSecondary` flag, the secondary can serve read-only workloads even when it is not the primary, but this does not affect the failover RTO.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this AZ-305 question test?
Design business continuity solutions — This question tests Design business continuity solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Configure Azure SQL Managed Instance with an auto-failover group to a secondary instance in North Europe. — Azure SQL Managed Instance supports auto-failover groups, which enable automatic, synchronous replication of databases to a secondary instance in a paired region (North Europe). This provides an RPO of less than 5 seconds (synchronous commit) and an RTO of under 1 minute, while the secondary can be used for read-only queries by adding the `-AllowReadOnlyFailoverToSecondary` parameter or using the listener's read-only endpoint. This meets all stated requirements for regional failover, low RPO/RTO, and read-only reporting.
What should I do if I get this AZ-305 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
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