DOP-C02 Question 328
Single answerYour organization is migrating an application to AWS. The application requires highly available and secure file storage that can be shared across multiple EC2 instances in multiple availability zones within the same region. Additionally, the solution should support encryption at rest and should not require management of underlying infrastructure. Which AWS service would best meet these requirements?
- A
Amazon EFS (Elastic File System)
- B
Amazon EBS (Elastic Block Store)
- C
Amazon S3 (Simple Storage Service)
- D
Amazon FSx for Windows File Server
Show answer and explanation
Correct answer: A
Explanation
Amazon EFS is the ideal solution for this use case because it provides a managed, highly available, and secure file storage system that can be shared across multiple EC2 instances within a region. It supports encryption at rest, scales automatically, and eliminates the need to manage underlying infrastructure. The other options either do not fit the requirements or are designed for specific use cases that do not align with the given scenario.
- A. Correct.
Amazon EFS (Elastic File System) is a fully managed shared file storage service that is highly available, scalable, and supports encryption at rest. It is designed for use with multiple EC2 instances across multiple Availability Zones, making it the best fit in this scenario.
- B. Incorrect.
Amazon EBS (Elastic Block Store) is a block storage service for a single EC2 instance. While it supports encryption at rest and is highly available within a single Availability Zone, it does not natively support sharing across multiple instances or Availability Zones.
- C. Incorrect.
Amazon S3 (Simple Storage Service) is an object storage service, not a shared file storage service. It does not meet the requirement for a file system that can be shared across EC2 instances.
- D. Incorrect.
Amazon FSx for Windows File Server is a shared file system service for applications requiring Windows-based file systems. While it supports high availability and encryption, it is not the best fit unless the application specifically needs a Windows file system.