AWS Certified Solutions Architect – Associate (SAA-C03) — Question 1003

A company wants to migrate an on-premises data center to AWS. The data center hosts a storage server that stores data in an NFS-based file system. The storage server holds 200 GB of data. The company needs to migrate the data without interruption to existing services. Multiple resources in AWS must be able to access the data by using the NFS protocol.

Which combination of steps will meet these requirements MOST cost-effectively? (Choose two.)

Answer options

• A. Create an Amazon FSx for Lustre file system.
• B. Create an Amazon Elastic File System (Amazon EFS) file system.
• C. Create an Amazon S3 bucket to receive the data.
• D. Manually use an operating system copy command to push the data into the AWS destination.
• E. Install an AWS DataSync agent in the on-premises data center. Use a DataSync task between the on-premises location and AWS.

Correct answer: B, E

Explanation

Amazon Elastic File System (Amazon EFS) is the ideal choice because it natively supports the NFS protocol and allows concurrent access from multiple AWS resources. AWS DataSync is the most efficient and reliable tool for online data migration, as it uses an on-premises agent to securely and continuously copy data to AWS without disrupting active services. Manual copy commands are prone to interruption, while Amazon S3 does not natively support NFS and Amazon FSx for Lustre is not the most cost-effective solution for standard NFS workloads.