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Domain 2.4: Resilient StorageResilienceStorageEFS

AWS SAA-C03 · Question 35 · Domain 2.4: Resilient Storage

A company needs a shared file system that can be accessed concurrently by hundreds of Amazon EC2 Linux instances across multiple Availability Zones. The file system must automatically scale its storage capacity. Which AWS service should be used?

Answer options:

A.

Amazon Elastic Block Store (EBS)

B.

Amazon S3

C.

Amazon Elastic File System (EFS)

D.

Amazon FSx for Windows File Server

How to approach this question

Identify 'shared file system', 'Linux instances', and 'multiple Availability Zones'. This is the exact use case for Amazon EFS.

Full Answer

C.Amazon Elastic File System (EFS)✓ Correct
Amazon Elastic File System (EFS)
Amazon EFS is a regional service storing data within and across multiple Availability Zones for high availability and durability. It is designed for Linux workloads.

Common mistakes

Choosing EBS, which is block storage and generally attached to a single instance.

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