SAA-C03 Question 214
Single answerA company needs a durable storage solution to store critical business data. The data must be replicated across multiple Availability Zones (AZs) to ensure high availability and durability. Which AWS storage service should the company choose?
- A
Amazon S3
- B
Amazon EBS
- C
Amazon EFS
- D
Instance Store
Show answer and explanation
Correct answer: A
Explanation
Amazon S3 is the best choice for this scenario because it is designed for high durability and availability. It automatically replicates data across multiple Availability Zones, ensuring that critical business data remains safe and accessible even in the event of an AZ failure. The other options either lack cross-AZ replication or durability guarantees, making them unsuitable for the given requirements.
- A. Correct.
Amazon S3 is designed for 99.999999999% (11 9s) of durability and automatically replicates data across multiple Availability Zones, making it ideal for critical and durable data storage.
- B. Incorrect.
Amazon EBS provides block storage for individual EC2 instances and can replicate data within a single Availability Zone, but it does not replicate data across multiple AZs automatically.
- C. Incorrect.
Amazon EFS is a file storage service that replicates data across multiple AZs, but it is generally used for shared file systems rather than for object storage or structured critical data.
- D. Incorrect.
Instance Store is ephemeral storage tied to an EC2 instance and does not provide durability or cross-AZ replication. Data is lost if the instance is stopped or terminated.