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Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 918 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Associate SAA-C03
Question #: 918
Topic #: 1
[All AWS Certified Solutions Architect - Associate SAA-C03 Questions]

A company is using AWS DataSync to migrate millions of files from an on-premises system to AWS. The files are 10 KB in size on average.

The company wants to use Amazon S3 for file storage. For the first year after the migration, the files will be accessed once or twice and must be immediately available. After 1 year, the files must be archived for at least 7 years.

Which solution will meet these requirements MOST cost-effectively?

  • A. Use an archive tool to group the files into large objects. Use DataSync to migrate the objects. Store the objects in S3 Glacier Instant Retrieval for the first year. Use a lifecycle configuration to transition the files to S3 Glacier Deep Archive after 1 year with a retention period of 7 years.
  • B. Use an archive tool to group the files into large objects. Use DataSync to copy the objects to S3 Standard-Infrequent Access (S3 Standard-IA). Use a lifecycle configuration to transition the files to S3 Glacier Instant Retrieval after 1 year with a retention period of 7 years.
  • C. Configure the destination storage class for the files as S3 Glacier Instant Retrieval. Use a lifecycle policy to transition the files to S3 Glacier Flexible Retrieval after 1 year with a retention period of 7 years.
  • D. Configure a DataSync task to transfer the files to S3 Standard-Infrequent Access (S3 Standard-IA). Use a lifecycle configuration to transition the files to S3 Deep Archive after 1 year with a retention period of 7 years.
Show Suggested Answer Hide Answer
Suggested Answer: A 🗳️
by nebajp at Aug. 10, 2024, 8:50 p.m.
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dhewa
Highly Voted 5 months, 2 weeks ago
Selected Answer: D
D simplifies the process by directly using S3 Standard-IA and then transitioning to S3 Glacier Deep Archive, which aligns well with access patterns and cost requirements. Option A sounds right but using an archive tool to group files into large objects adds complexity and operational overhead. This step isn’t necessary if you can directly manage the files with S3 lifecycle policies.
upvoted 11 times
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Mistwalker
Most Recent 1 week, 6 days ago
Selected Answer: A
10KB/file x millions of files = insane unnecessary cost when each is charged at 128KB/object No one is talking about operational overhead, they just want cost-effectiveness
upvoted 2 times
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FlyingHawk
2 weeks, 6 days ago
Selected Answer: A
- Each file is 10 KB in size. - S3 charges a minimum of 128 KB per object. -Total number of files: millions of files. - Files are accessed twice in the first year. - After 1 year, files are archived for 7 years - S3 Glacier: Minimum charge for 40 KB per object. S3 Standard-IA and S3 One Zone-IA storage have a minimum billable object size of 128 KB. Smaller objects may be stored but will be charged for 128 KB of storage at the appropriate storage class rate Option D does not group those files into big object, so 1 million files will be charged as 1 million objects(128KB). https://aws.amazon.com/s3/pricing/
upvoted 2 times
FlyingHawk
2 weeks, 6 days ago
Note The S3 Standard-IA and S3 One Zone-IA storage classes are suitable for objects larger than 128 KB that you plan to store for at least 30 days. If an object is less than 128 KB, Amazon S3 charges you for 128 KB. If you delete an object before the end of the 30-day minimum storage duration period, you are charged for 30 days. Objects that are deleted, overwritten, or transitioned to a different storage class before 30 days will incur the normal storage usage charge plus a pro-rated charge for the remainder of the 30-day minimum. For pricing information, see Amazon S3 pricing. https://docs.aws.amazon.com/AmazonS3/latest/userguide/storage-class-intro.html
upvoted 2 times
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LeonSauveterre
1 month ago
Selected Answer: D
About option A: For data stored in the S3 Glacier Instant Retrieval storage class, there is indeed a minimum object size of 128 KB. If the objects are smaller than 128 KB, AWS still charges for 128 KB per object, which can significantly impact cost efficiency when dealing with a large number of small files, such as the 10 KB files in the given scenario. One more thing: once or twice a year is perfect for Infrequent Access. It also provides instant availability for the objects stored in it.
upvoted 1 times
LeonSauveterre
1 month ago
I believe Standard-IA remains the most straightforward and cost-effective choice for small files (10 KB average) that are accessed 1~2 times in the first year without aggregation.
upvoted 1 times
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EllenLiu
1 month, 1 week ago
Selected Answer: A
S3 Glacier Instant Retrieval is more expensive than S3 Standard-IA for the first year when immediate availability is required.
upvoted 2 times
EllenLiu
1 month, 1 week ago
sorry, choose D
upvoted 1 times
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dragossky
1 month, 3 weeks ago
Selected Answer: A
For sure A, has amazing retrieval - Store the objects in S3 Glacier Instant Retrieval
upvoted 2 times
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jfedotov
1 month, 3 weeks ago
Selected Answer: D
D is correct. A is not correct, because Amazon S3 Glacier Instant Retrieval min object size is 128KB, in question 10KB
upvoted 2 times
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AMEJack
2 months, 1 week ago
Selected Answer: D
There is no need to use archive tool to migrate small files, DataSync is enough.
upvoted 2 times
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Ez1tap
4 months, 1 week ago
Selected Answer: A
correct answer is A you need 2 separate lifecycle policy
upvoted 3 times
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Abhiiinav
4 months, 3 weeks ago
Selected Answer: D
answer is D. Storing the objects in S3 Glacier Instant Retrieval for the first year is more expensive than S3 Standard-IA for data that is accessed infrequently.
upvoted 3 times
blehbleh
3 months, 4 weeks ago
Wrong, it says 1-2 times in the first year and Amazon states that s3 glacier isn’t at retrieval can save up to 68% compared to s3 infrequent access.
upvoted 2 times
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blehbleh
4 months, 4 weeks ago
Selected Answer: A
Its A, took some research but A is correct Per Amazon S# glacier page: "Amazon S3 Glacier Instant Retrieval is an archive storage class that delivers the lowest-cost storage for long-lived data that is rarely accessed and requires retrieval in milliseconds. With S3 Glacier Instant Retrieval, you can save up to 68% on storage costs compared to using the S3 Standard-Infrequent Access (S3 Standard-IA) storage class, when your data is accessed once per quarter." After the one year move it to Deep archive.
upvoted 4 times
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Abdullah2004
5 months, 1 week ago
Selected Answer: D
D is most cost effective
upvoted 3 times
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progounick
5 months, 1 week ago
Selected Answer: A
ChatGPT agrees with me and selected A
upvoted 2 times
youkarthik
2 months ago
My intance of chatgpt says it is D
upvoted 2 times
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dhewa
5 months, 2 weeks ago
Selected Answer: A
D simplifies the process by directly using S3 Standard-IA and then transitioning to S3 Glacier Deep Archive, which aligns well with access patterns and cost requirements. Option A sounds right but using an archive tool to group files into large objects adds complexity and operational overhead. This step isn’t necessary if you can directly manage the files with S3 lifecycle policies.
upvoted 2 times
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[Removed]
5 months, 2 weeks ago
Selected Answer: A
A looks good
upvoted 2 times
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muhammadahmer36
5 months, 3 weeks ago
Selected Answer: A
Answer is A
upvoted 2 times
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komorebi
5 months, 4 weeks ago
Selected Answer: B
Answer is B
upvoted 1 times
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