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Exam AWS Certified Solutions Architect - Professional topic 1 question 934 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Professional
Question #: 934
Topic #: 1
[All AWS Certified Solutions Architect - Professional Questions]

A company is running a data-intensive application on AWS. The application runs on a cluster of hundreds of Amazon EC2 instances. A shared file system also runs on several EC2 instances that store 200 TB of data. The application reads and modifies the data on the shared file system and generates a report. The job runs once monthly, reads a subset of the files from the shared file system, and takes about 72 hours to complete. The compute instances scale in an Auto Scaling group, but the instances that host the shared the system run continuously. The compute and storage instances are all in the same AWS Region.
A solutions architect needs to reduce costs by replacing the shared file system instances. The file system must provide high performance access to the needed data for the duration of the 72-hour run.
Which solution will provide the LARGEST overall cost reduction while meeting these requirements?

  • A. Migrate the data from the existing shared file system to an Amazon S3 bucket that uses the S3 Intelligent-Tiering storage class. Before the job runs each month, use Amazon FSx for Lustre to create a new file system with the data from Amazon S3 by using lazy loading. Use the new file system as the shared storage for the duration of the job. Delete the file system when the job is complete.
  • B. Migrate the data from the existing shared file system to a large Amazon Elastic Block Store (Amazon EBS) volume with Multi-Attach enabled. Attach the EBS volume to each of the instances by using a user data script in the Auto Scaling group launch template. Use the EBS volume as the shared storage for the duration of the job. Detach the EBS volume when the job is complete.
  • C. Migrate the data from the existing shared file system to an Amazon S3 bucket that uses the S3 Standard storage class. Before the job runs each month, use Amazon FSx for Lustre to create a new file system with the data from Amazon S3 by using batch loading. Use the new file system as the shared storage for the duration of the job. Delete the file system when the job is complete.
  • D. Migrate the data from the existing shared file system to an Amazon S3 bucket. Before the job runs each month, use AWS Storage Gateway to create a file gateway with the data from Amazon S3. Use the file gateway as the shared storage for the job. Delete the file gateway when the job is complete.
Show Suggested Answer Hide Answer
Suggested Answer: A 🗳️
by ArreRaja at Sept. 7, 2022, 7:52 p.m.
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Sin_Dan
6 months, 1 week ago
Selected Answer: A
The correct answer is A S3 intelligent-tiering for cost-effectiveness FSx lustre is a requirement, because the application needs high performance computing.
upvoted 1 times
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SkyZeroZx
1 year, 10 months ago
Selected Answer: A
keyword = Intelligent-Tiering && Lazy Load Then A
upvoted 2 times
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zozza2023
2 years, 2 months ago
Selected Answer: C
can someone explian why it is not C A seems KO for me as inteligent tiering
upvoted 2 times
Sin_Dan
6 months, 1 week ago
S3 Standard is more expensive than Intelligent-tiering Batch loading in FSx for lustre is less cost-effective than lazy loading
upvoted 1 times
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SureNot
2 years, 4 months ago
Selected Answer: A
The file system must provide high performance access
upvoted 2 times
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sjpd10
2 years, 5 months ago
'A' Explained well here: https://aws.amazon.com/blogs/storage/new-enhancements-for-moving-data-between-amazon-fsx-for-lustre-and-amazon-s3/
upvoted 2 times
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joanneli77
2 years, 6 months ago
Where I can't choose A is "Delete the file system" at the end... wait... don't we need that?
upvoted 2 times
superuser784
2 years, 5 months ago
the job runs once a month for 72 hours, Why do you need the file system to be up the whole month? the file system will be created again BEFORE the job start.
upvoted 1 times
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skywalker
2 years, 6 months ago
Selected Answer: D
There is no mentioned of High Performance Computing with low latency requirement.. thus Amazon FSx for Lustre should out.. Instead another ways to access S3 object is via File Storage Gateway. Just need to install a file storage gateway and points to existing S3 storage... present either NFS or SMB to appl server.
upvoted 2 times
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dcdcdc3
2 years, 6 months ago
Selected Answer: A
A described here https://aws.amazon.com/blogs/storage/new-enhancements-for-moving-data-between-amazon-fsx-for-lustre-and-amazon-s3/ why not C? there is no "batch loading"
upvoted 4 times
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JohnPi
2 years, 6 months ago
Selected Answer: A
Amazon FSx will import the objects in our S3 bucket as files, and “lazy-load” the file contents from S3 when we first access the file.
upvoted 2 times
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akash_it
2 years, 6 months ago
Selected Answer: C
Why not C? It looks more appropriate
upvoted 1 times
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Biden
2 years, 6 months ago
Selected Answer: C
Whats the need for Intelligent Tiering ? Standard S3 should suffice, hence C
upvoted 2 times
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Ally26
2 years, 7 months ago
D could not be answer because Storage Gateway generally used for file migration from on-prem to AWS, this is not the requirement here
upvoted 1 times
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pixepe
2 years, 7 months ago
Answer is A, In reality, we need to select from A & D only. A & D comparison: A do have S3 Intelligent Tiering (remember it's 200 GB) which should matter, Which D doesn't have - A wins High Performance due to FSx for Lusture (requirement - file system must provide high performance acces) - A wins Unsure but File Gateway may be less costly (than FSx lusture) - May be D wins here After above points, Overall A is winner
upvoted 4 times
fdoxxx
2 years, 6 months ago
200 TB...
upvoted 1 times
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AwsBRFan
2 years, 7 months ago
Selected Answer: A
A seems the right one to me
upvoted 4 times
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Rocketeer
2 years, 7 months ago
Need "The file system must provide high performance access to the needed data ..." Hence my choice is A
upvoted 3 times
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ArreRaja
2 years, 7 months ago
D with file gateway (software appliance) and S3 seems to be the cheapest
upvoted 2 times
Pazhuvil
2 years, 7 months ago
But need high performance access for 72 hours each month. So A seems to be reasonable.
upvoted 2 times
fdoxxx
2 years, 6 months ago
file gateway is slower than FSx... - A is a good choice
upvoted 1 times
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