AWS Certified Solutions Architect – Associate (SAA-C03) — Question 329

A company recently created a disaster recovery site in a different AWS Region. The company needs to transfer large amounts of data back and forth between NFS file systems in the two Regions on a periodic basis.

Which solution will meet these requirements with the LEAST operational overhead?

Answer options

• A. Use AWS DataSync.
• B. Use AWS Snowball devices.
• C. Set up an SFTP server on Amazon EC2.
• D. Use AWS Database Migration Service (AWS DMS).

Correct answer: A

Explanation

AWS DataSync is a fully managed service designed to automate and accelerate moving data between NFS file systems, offering the lowest operational overhead for periodic transfers. AWS Snowball is impractical for regular, automated transfers between AWS Regions as it involves physical shipping. Setting up an EC2-based SFTP server introduces significant management overhead, and AWS DMS is optimized for databases rather than standard NFS file systems.