A company is migrating a large-scale web application to AWS. The application requires a shared file system that can be accessed by hundreds of EC2 instances across multiple Availability Zones. The storage must be highly available, durable, and support POSIX permissions. Which combination of actions should the architect take? (Select TWO)

Answer options:

Create an Amazon EFS file system using the Standard storage class.

Create an Amazon EFS file system using the One Zone storage class.

Mount the EFS file system on the EC2 instances using the EFS mount helper.

Use Amazon EBS Multi-Attach.

Use Amazon FSx for Lustre.

Use Amazon S3 and mount it using a third-party FUSE tool.

How to approach this question

Identify the multi-AZ shared file system.

Full Answer

Create an Amazon EFS file system using the Standard storage class., Mount the EFS file system on the EC2 instances using the EFS mount helper.

Amazon EFS Standard storage class provides a highly available, multi-AZ, POSIX-compliant shared file system. The EFS mount helper is the AWS-recommended way to mount it on EC2 instances.

Common mistakes

Choosing EFS One Zone, which lacks multi-AZ high availability.

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