Q44 — AWS SAA-C03 Ch.13

Question 44 of 100 | ← Chapter 13

Q944. A company is planning to migrate a legacy application to AWS. The application currently uses NFS to communicate to an on-premises storage solution to store application data. The application cannot be modified to use any other communication protocols other than NFS for this purpose.Which storage solution should a solutions architect recommend for use after the migration?

Correct Answer: C. Amazon Elastic File System (Amazon EFS)

Explanation

The correct answer is C. Amazon Elastic File System (Amazon EFS). Here's why: NFS Support: Amazon EFS is a fully managed, scalable file system that natively supports NFSv4.1. This means the legacy application can seamlessly connect to EFS using its existing NFS protocol without any modifications.Cloud-Native: EFS is a cloud-native service, eliminating the need for on-premises storage infrastructure and simplifying management.Scalability and Availability: EFS offers high scalability and availability, ensuring that the application can access its data reliably and efficiently in the cloud. Why other options are not suitable: A. AWS DataSync: DataSync is a data transfer service, not a storage solution. It's used to move data between on-premises and AWS, but it doesn't provide persistent storage. B. Amazon Elastic Block Store (Amazon EBS): EBS is designed for block-level storage, typically used for instance-level storage. It doesn't directly support NFS protocols. D. Amazon EMR File System (Amazon EMRFS): EMRFS is specifically designed for use with Amazon EMR (Elastic MapReduce) and doesn't support NFS. In summary: Amazon EFS is the most suitable storage solution for this scenario because it offers native NFS support, cloud-native functionality, and scalability, allowing the legacy application to migrate to AWS without requiring modifications.