AWS Certified Solutions Architect – Associate (SAA-C03) — Question 664

A company has NFS servers in an on-premises data center that need to periodically back up small amounts of data to Amazon S3.

Which solution meets these requirements and is MOST cost-effective?

Answer options

• A. Set up AWS Glue to copy the data from the on-premises servers to Amazon S3.
• B. Set up an AWS DataSync agent on the on-premises servers, and sync the data to Amazon S3.
• C. Set up an SFTP sync using AWS Transfer for SFTP to sync data from on premises to Amazon S3.
• D. Set up an AWS Direct Connect connection between the on-premises data center and a VPC, and copy the data to Amazon S3.

Correct answer: B

Explanation

AWS DataSync is a highly cost-effective and efficient service designed specifically for automating data transfers between on-premises storage (like NFS) and Amazon S3, charging only for the data transferred. AWS Glue is intended for ETL jobs, AWS Transfer for SFTP incurs high hourly running costs, and AWS Direct Connect has significant port and physical connection costs, making them far less economical for transferring small amounts of data.