AWS Certified SysOps Administrator – Associate — Question 140

A company wants to collect data from an application to use for analytics. For the first 90 days, the data will be infrequently accessed but must remain highly available. During this time, the company’s analytics team requires access to the data in milliseconds. However, after 90 days, the company must retain the data for the long term at a lower cost. The retrieval time after 90 days must be less than 5 hours.

Which solution will meet these requirements MOST cost-effectively?

Answer options

• A. Store the data in S3 Standard-Infrequent Access (S3 Standard-IA) for the first 90 days. Set up an S3 Lifecycle rule to move the data to S3 Glacier Flexible Retrieval after 90 days.
• B. Store the data in S3 One Zone-Infrequent Access (S3 One Zone-IA) for the first 90 days. Set up an S3 Lifecycle rule to move the data to S3 Glacier Deep Archive after 90 days.
• C. Store the data in S3 Standard for the first 90 days. Set up an S3 Lifecycle rule to move the data to S3 Glacier Flexible Retrieval after 90 days.
• D. Store the data in S3 Standard for the first 90 days. Set up an S3 Lifecycle rule to move the data to S3 Glacier Deep Archive after 90 days.

Correct answer: A

Explanation

Option A is the most cost-effective because S3 Standard-IA provides the necessary availability for the first 90 days, and transitioning to S3 Glacier Flexible Retrieval after that period allows for cost-efficient long-term storage while meeting the retrieval time requirement. Options B and D use S3 One Zone-IA and S3 Glacier Deep Archive, which are not optimal for the initial high availability and immediate access needs. Option C does not utilize the cost-saving features of S3 Glacier for long-term storage.