Match each Azure SQL Database high availability feature to its description.
Drag a concept onto its matching description — or click a concept then click the description.
Asynchronous replication to a secondary region
Group of databases that fail over together
Replicas across different availability zones
Data replicated within a single datacenter
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Zone-redundant availability: Protects against datacenter failures by replicating databases across three availability zones within a region.
These features provide different levels of availability and disaster recovery for Azure SQL Database.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Zone-redundant availability: Protects against datacenter failures by replicating databases across three availability zones within a region.
Why this is correct
Zone-redundant configuration replicates data across zones in the same region, ensuring availability if a zone fails.
Auto-failover groups: Enables automatic and manual failover of a group of databases across regions, providing a readable secondary.
Why this is correct
Auto-failover groups manage cross-region failover for multiple databases, with readable secondaries.
Active geo-replication: Creates up to four readable secondary databases in the same or different regions, allowing manual failover.
Why this is correct
Active geo-replication provides individual database secondaries with manual failover, not automatic grouping.
Business Critical tier replicas: Provides four always-on replicas within the same region for high availability and automatic failover.
Why this is correct
Business Critical tier uses local redundant replicas for in-region HA.
Zone-redundant availability: Automatically fails over databases across different Azure regions.
Why it's wrong here
Incorrect — this describes Auto-failover groups, not zone-redundant availability.
Active geo-replication: Creates four replicas in the same datacenter to provide high availability.
Why it's wrong here
Incorrect — this describes Business Critical tier replicas, not active geo-replication.
Go deeper
Learn chapter
Overview of Azure Data Platform Options
Key term
Azure SQL Performance Tuning
Azure SQL Performance Tuning is the process of optimizing the speed and efficiency of queries and database operations in Microsoft Azure SQL Database or SQL Managed Instance to reduce latency and improve throughput.
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