AWS Solutions Architect Associate Practice Test

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How many copies of my data does RDS - Aurora store by default?

The correct answer is: 6

Amazon RDS for Aurora is designed to provide high availability and durability for your data. By default, Aurora creates six copies of your data across multiple Availability Zones. This design ensures that if one of the storage nodes or even an entire Availability Zone becomes unavailable, your data remains safe and accessible through multiple redundant copies. The storage is divided into segments, and as transactions are made, data is written to separate segments with the aim of maintaining consistency. If a failure occurs, Aurora’s architecture enables automatic failover to ensure minimal disruption. This level of redundancy helps to maximize both resilience to failures and durability, which are critical for database operations in production environments. This approach distinguishes Aurora from other database services, such as standard RDS for MySQL or PostgreSQL, which may have different replication and backup configurations. The six copies allow for seamless recovery and continuous availability, which is a core benefit of using Aurora.