Question #915
A company requires a fully managed, highly available, and scalable file storage solution that is accessible via the Network File System (NFS) protocol. Which AWS service best meets these requirements?
Amazon S3
Amazon Elastic File System (Amazon EFS)
Amazon FSx for Windows File Server
Amazon Elastic Block Store (Amazon EBS)
Explanation
Amazon Elastic File System (EFS) is designed to provide scalable, fully managed, and highly available file storage accessible via NFS. It automatically scales storage capacity up or down as needed and supports multi-AZ redundancy for high availability.
Why other options are incorrect:
- A. Amazon S3: An object storage service, not a file system, and does not support NFS protocol.
- C. Amazon FSx for Windows File Server: Optimized for Windows/SMB environments, not NFS.
- D. Amazon EBS: Block storage tied to a single EC2 instance in one Availability Zone (AZ), lacking native multi-AZ scalability or NFS support.
Key Points:
- EFS is built for Linux-based NFS workloads with multi-AZ durability.
- Fully managed and pay-as-you-go pricing.
- Use cases: Shared file storage for web servers, content management systems, and big data analytics.
Answer
The correct answer is: B