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Question 23

A company currently stores all of its data in Amazon S3 by using the S3 Standard storage class.

A data engineer examined data access patterns to identify trends. During the first 6 months, most data files are accessed several times each day. Between 6 months and 2 years, most data files are accessed once or twice each month. After 2 years, data files are accessed only once or twice each year.

The data engineer needs to use an S3 Lifecycle policy to develop new data storage rules. The new storage solution must continue to provide high availability.

Which solution will meet these requirements in the MOST cost-effective way?

    Correct Answer: C

    The company needs a cost-effective storage solution with high availability that aligns with the data access patterns over time. For the first 6 months, S3 Standard is appropriate because data is accessed frequently. After 6 months, transitioning to S3 Standard-Infrequent Access (S3 Standard-IA) is suitable since data access drops to once or twice each month, balancing cost and accessibility. After 2 years, data is accessed only once or twice a year, making S3 Glacier Deep Archive the most cost-effective option, as it is optimized for long-term archival and infrequent access, despite its longer retrieval times. This combination minimizes costs while providing sufficient access based on usage patterns.

Discussion
helpawsOption: B

"S3 Glacier Flexible Retrieval delivers low-cost storage, up to 10% lower cost (than S3 Glacier Instant Retrieval), for archive data that is accessed 1-2 times per year and is retrieved asynchronously" Source: https://aws.amazon.com/s3/storage-classes/glacier/

lucas_rfsbOption: C

Since it was requested high availability, then can't be Standard One Zone. And in the end of 2 years it was asked for the most cost effective, than Glacier Deep Archive.

GiorgioGssOption: C

The new storage solution must continue to provide high availability = A and C out. After 2 years, data files are accessed only once or twice each year. && MOST cost-effective way = C. C is more cost-effective than B.

GiorgioGss

I mean A and D out. sry.

arvehisaOption: C

2 requirements: 1)highly available 2) cost-effective. no mention about load time so C is correct.

blackgamerOption: C

The question mention "the most cost-effective way". C is most cost-effective and still highly available. The requirement doesn't indicate the retrieval time requirement.

certplan

Where data files are accessed only once or twice each year after 2 years, and high availability is a requirement, GFR is more suitable than GDA: GFR offers faster retrieval times compared to GDA: With GFR you can typically retrieve archived data within minutes to hours, making it more suitable for scenarios where occasional access to data with moderate latency is required. - On the other hand, GDA is optimized for long-term archival with infrequent access and offers the lowest cost among Glacier storage classes but with retrieval times ranging from hours to days. 2. - While both offer high durability for archived data, GFR aligns better with the requirement of high availability due to its faster retrieval times. - In scenarios where occasional access to archived data is required, having faster retrieval times ensures that the data is available promptly when needed, contributing to a better user experience and meeting high availability requirements. https://aws.amazon.com/glacier/pricing/

CalvinL4

Will go with B.

androloginOption: B

Based on this link https://aws.amazon.com/s3/storage-classes/glacier/ Glacier Flexible Retrieval is cheaper that Instant Retrieval

LR2023

questions doesnt provide clairty on when data is accessed does it need to made available instantly or not. Deep archive times are longer.

imymoco

B https://aws.amazon.com/jp/about-aws/whats-new/2021/11/amazon-s3-glacier-storage-class-amazon-s3-glacier-flexible-retrieval/

KhooksOption: C

Answer should be C. B: While this option transitions to S3 Glacier Flexible Retrieval after 2 years, which provides quicker retrieval times than Glacier Deep Archive, it is more expensive. Given the infrequent access pattern after 2 years, the additional cost is not justified.

FexoOption: B

Answer is B, because Object needs to be retrieved once / twice monthly , hence GFR S3 Glacier Flexible Retrieval delivers low-cost storage, up to 10% lower cost (than S3 Glacier Instant Retrieval), for archive data that is accessed 1-2 times per year and is retrieved asynchronously https://aws.amazon.com/s3/storage-classes/glacier/

tgvOption: C

I will go with C because Glacier Flexible Retrieval is way more expensive than Glacier Deep Archive.

Just_NinjaOption: C

HA and cost effective. Here is no hint in the question for instant access..

Christina666Option: C

HA - C

certplan

The use case specifically states: "After 2 years, data files are accessed only once or twice each year." "The data engineer needs to use an S3 Lifecycle policy to develop new data storage rules. The new storage solution must continue to provide high availability." Deep archive is not used for these purposes. Option C: - S3 Glacier Deep Archive is the most cost-effective storage class for long-term archival data. However, it has the longest retrieval times among Glacier storage classes, often taking several hours to retrieve data. This might not be suitable for scenarios where high availability is a priority. - Transitioning data directly from S3 Standard-IA to S3 Glacier Deep Archive skips the intermediate step of transitioning to a less expensive storage class like S3 One Zone-IA or S3 Glacier Flexible Retrieval, potentially resulting in higher costs over time.

CalvinL4

C is wrong. Deep archive requires very long to load.