A company is migrating a legacy application to AWS. The application requires a shared file system that supports the POSIX permissions model and can be accessed concurrently by hundreds of EC2 Linux instances across multiple Availability Zones. Which THREE actions should the architect take? (Select THREE)

Answer options:

Create an Amazon EBS volume and attach it to all instances using Multi-Attach.

Create an Amazon EFS file system.

Create an Amazon FSx for Windows File Server.

Create EFS Mount Targets in each Availability Zone.

Configure an S3 bucket and mount it using S3 File Gateway.

Mount the file system on the EC2 instances using the NFS protocol.

Use AWS DataSync to continuously sync EBS volumes.

How to approach this question

Identify the AWS service for shared Linux file storage.

Full Answer

B, D, F

Amazon EFS provides a scalable, fully managed elastic NFS file system for use with AWS Cloud services. It supports POSIX permissions. To use it, you create the file system, create mount targets in your VPC subnets, and mount it on your Linux instances using NFS.

Common mistakes

Choosing EBS Multi-Attach, which requires a cluster-aware file system, not standard Linux file systems.

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