A company is migrating a legacy application that relies on a shared file system. The application will run on multiple EC2 Linux instances across multiple Availability Zones. The file system must support POSIX permissions and concurrent read/write access. Which AWS storage service should be used?

Answer options:

Amazon Elastic Block Store (EBS) Multi-Attach

Amazon S3

Amazon Elastic File System (EFS)

Amazon FSx for Windows File Server

How to approach this question

Match 'shared file system', 'Linux', and 'POSIX' to Amazon EFS.

Full Answer

C.Amazon Elastic File System (EFS)✓ Correct

Amazon EFS is designed to provide massively parallel shared access to thousands of Amazon EC2 instances, enabling your applications to achieve high levels of aggregate throughput and IOPS with consistent low latencies.

Common mistakes

Choosing EBS Multi-Attach, which lacks a managed file system layer.

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Practice the full AWS Solutions Architect Professional SAP-C02 Practice Exam 1

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