AWS Certified Solutions Architect – Associate (SAA-C02) — Question 553
A company wants to migrate its on-premises application to AWS. The application produces output files that vary in size from tens of gigabytes to hundreds of terabytes. The application data must be stored in a standard file system structure. The company wants a solution that scales automatically, is highly available, and requires minimum operational overhead.
Which solution will meet these requirements?
Answer options
- A. Migrate the application to run as containers on Amazon Elastic Container Service (Amazon ECS). Use Amazon S3 for storage.
- B. Migrate the application to run as containers on Amazon Elastic Kubernetes Service (Amazon EKS). Use Amazon Elastic Block Store (Amazon EBS) for storage.
- C. Migrate the application to Amazon EC2 instances in a Multi-AZ Auto Scaling group. Use Amazon Elastic File System (Amazon EFS) for storage.
- D. Migrate the application to Amazon EC2 instances in a Multi-AZ Auto Scaling group. Use Amazon Elastic Block Store (Amazon EBS) for storage.
Correct answer: C
Explanation
Amazon Elastic File System (Amazon EFS) is the ideal choice because it provides a fully managed, highly available, standard POSIX-compliant file system that automatically scales up to petabytes of data to accommodate massive files with minimal management. Amazon S3 (Option A) is object storage rather than a standard file system, which would require application modifications. Amazon Elastic Block Store (Amazon EBS) (Options B and D) does not scale storage capacity automatically and cannot be natively shared across multiple Availability Zones simultaneously without significant operational overhead.