ExpertMedium1 markMultiple Choice
AWS SAP-C02 · Question 73 · Domain 1.3: Reliability and Resilience
A company is migrating a large MySQL database to Amazon Aurora MySQL. The application requires high availability and must be able to survive the failure of an entire Availability Zone without manual intervention. How does Aurora meet this requirement?
A company is migrating a large MySQL database to Amazon Aurora MySQL. The application requires high availability and must be able to survive the failure of an entire Availability Zone without manual intervention. How does Aurora meet this requirement?
Answer options:
A.
Aurora uses Amazon EBS Multi-Attach to share storage across AZs.
B.
Aurora automatically replicates data across 3 Availability Zones. If the primary instance fails, Aurora automatically promotes a Read Replica to primary.
C.
Aurora requires the manual configuration of synchronous replication to a standby instance.
D.
Aurora uses AWS DataSync to copy data between AZs.
How to approach this question
Understand Aurora's storage and HA architecture.
Full Answer
B.Aurora automatically replicates data across 3 Availability Zones. If the primary instance fails, Aurora automatically promotes a Read Replica to primary.✓ Correct
Aurora automatically replicates data across 3 Availability Zones. If the primary instance fails, Aurora automatically promotes a Read Replica to primary.
Amazon Aurora's storage volume automatically replicates 6 copies of your data across 3 Availability Zones. If the primary instance fails, Aurora automatically fails over to a Read Replica (if one exists) or creates a new primary instance.
Common mistakes
Confusing Aurora's storage layer with standard RDS Multi-AZ (which uses synchronous block-level replication to a single standby).
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