AWS Certified Solutions Architect – Associate (SAA-C02) — Question 610

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 data transfers between storage systems, including NFS file systems, making it the option with the lowest operational overhead. AWS Snowball is impractical for periodic transfers due to physical shipping times, and setting up an SFTP server on Amazon EC2 requires significant manual configuration and maintenance. AWS Database Migration Service (AWS DMS) is intended for database replication rather than file system data transfers.