Exam AWS Certified Cloud Practitioner CLF-C02 topic 1 question 446 discussion

Amazon S3 Glacier Instant Retrieval • Millisecond retrieval, great for data accessed once a quarter • Minimum storage duration of 90 days

B. Amazon S3 Glacier Instant Retrieval - lowest cost for infrequent access, but fast retrieval S3 Intelligent-Tiering is the recommended storage class for data with unknown, changing, or unpredictable access patterns, independent of object size or retention period, such as data lakes, data analytics, and new applications. https://docs.aws.amazon.com/AmazonS3/latest/userguide/intelligent-tiering.html#:~:text=The%20S3%20Intelligent-Tiering%20storage%20class%20supports%20all%20Amazon,endpoint%20in%20a%20virtual%20private%20%20cloud%20%28VPC%29

Considering that Intelligent-Tiering has been the answer for "cheap" on this website until now, I'm inclined to vote for it.

B. Amazon S3 Glacier Instant Retrieval - lowest cost for infrequent access, but fast retrieval

Looks like B is the right answer. Intelligent tiering is for the data that is frequently used.

The best choice for storing data that is accessed infrequently (only twice a year) at the lowest cost is Amazon S3 Glacier Deep Archive. However, since this option isn’t listed, the closest alternative is Amazon S3 Glacier Instant Retrieval (option B). Therefore, Amazon S3 Glacier Instant Retrieval (option B) is the most suitable choice among the given options for infrequent access at a lower cost.

This storage class is designed for data that is rarely accessed but requires quick retrieval when needed. It's ideal for archival data that is accessed occasionally and offers the lowest cost for infrequent access with fast retrieval times.

Glacier Instant Retrieval Storage Cost: $0.004 * 1,000 GB = $4.00 per month Annual Cost (12 months): $4.00 * 12 = $48.00 Retrieval Cost (per retrieval): $0.03 * 1,000 GB = $30.00 Intelligent-Tiering (Archive Access Tier) Storage Cost: $0.004 * 1,000 GB = $4.00 per month Annual Cost (12 months): $4.00 * 12 = $48.00 Retrieval Cost (per retrieval): $0.01 * 1,000 GB = $10.00 Request Cost: $10.00 per 1,000 requests Total Cost for 1 Year (including retrievals): Glacier Instant Retrieval: $48.00 (storage) + $60.00 (two retrievals) = $108.00 Intelligent-Tiering (Archive Access Tier): $48.00 (storage) + $20.00 (two retrievals) + $20.00 (two requests) = $88.00

Glacier is the cheapest option here. Intelligent-Tiering is for unpredictable scenarios

D is correct

Amazon S3 Intellignet-Tiering as the storage cost is lower for infrequent data compared to S3 Standard, Glacier Instant Retrieval, and Outpost.