Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 487 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Associate SAA-C03

Question #: 487
Topic #: 1

[All AWS Certified Solutions Architect - Associate SAA-C03 Questions]

A company seeks a storage solution for its application. The solution must be highly available and scalable. The solution also must function as a file system be mountable by multiple Linux instances in AWS and on premises through native protocols, and have no minimum size requirements. The company has set up a Site-to-Site VPN for access from its on-premises network to its VPC.

Which storage solution meets these requirements?

A. Amazon FSx Multi-AZ deployments
B. Amazon Elastic Block Store (Amazon EBS) Multi-Attach volumes
C. Amazon Elastic File System (Amazon EFS) with multiple mount targets
D. Amazon Elastic File System (Amazon EFS) with a single mount target and multiple access points

Show Suggested Answer

Suggested Answer: C 🗳️

by cloudenthusiast at May 18, 2023, 8:03 p.m.

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Felix_br

Highly Voted 1 year, 7 months ago

Selected Answer: C

The other options are incorrect for the following reasons: A. Amazon FSx Multi-AZ deployments Amazon FSx is a managed file system service that provides access to file systems that are hosted on Amazon EC2 instances. Amazon FSx does not support native protocols, such as NFS. B. Amazon Elastic Block Store (Amazon EBS) Multi-Attach volumes Amazon EBS is a block storage service that provides durable, block-level storage volumes for use with Amazon EC2 instances. Amazon EBS Multi-Attach volumes can be attached to multiple EC2 instances at the same time, but they cannot be mounted by multiple Linux instances through native protocols, such as NFS. D. Amazon Elastic File System (Amazon EFS) with a single mount target and multiple access points A single mount target can only be used to mount the file system on a single EC2 instance. Multiple access points are used to provide access to the file system from different VPCs.

upvoted 13 times

dkw2342

9 months, 3 weeks ago

"A single mount target can only be used to mount the file system on a single EC2 instance. Multiple access points are used to provide access to the file system from different VPCs." This is clearly wrong. You can have exactly one EFS mount target per subnet (AZ), and of course this mount target can be used by many clients (EC2 instances, containers etc.) - see diagram here for example: https://docs.aws.amazon.com/efs/latest/ug/accessing-fs.html In my opinion, C and D are equally valid answers.

upvoted 2 times

Salilgen

6 months, 1 week ago

D is not valid answer because "the solution must be highly available" then it must be multi-AZ: every AZ requires a mount target

upvoted 1 times

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unbendable

1 year, 2 months ago

Amazon FSx ONTAP supports clients mounting it with NFS. https://docs.aws.amazon.com/fsx/latest/ONTAPGuide/attach-linux-client.html. Though A is not clear about which FSx product is used

upvoted 2 times

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cloudenthusiast

Highly Voted 1 year, 7 months ago

Selected Answer: C

Amazon EFS is a fully managed file system service that provides scalable, shared storage for Amazon EC2 instances. It supports the Network File System version 4 (NFSv4) protocol, which is a native protocol for Linux-based systems. EFS is designed to be highly available, durable, and scalable.

upvoted 9 times

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awsgeek75

Most Recent 11 months, 4 weeks ago

Selected Answer: C

A: FSx is a File Server, not a mountable file system B: EBS can't be mounted on on-prem devices D: Access points are not same as mount points C: EFS support multi mount targets and on-prem devices: https://docs.aws.amazon.com/efs/latest/ug/mounting-fs-mount-helper-direct.html

upvoted 3 times

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