DEA-C01 Question 235
Select 2You are working as a data engineer for a company that stores large volumes of e-commerce transaction logs in Amazon S3. These logs are frequently accessed for the first 30 days to support business analytics but are rarely accessed afterward. Regulatory requirements mandate that the logs must be retained for 7 years. How can you optimize the cost of storage for these logs based on their lifecycle?
- A
Use an S3 Lifecycle policy to move the logs to S3 Standard-IA after 30 days and then to S3 Glacier after 90 days.
- B
Delete the logs after 30 days since they are rarely accessed, and rely on backups for retention.
- C
Use an S3 Lifecycle policy to transition the logs to S3 Glacier Deep Archive after 30 days.
- D
Use an S3 Lifecycle policy to move the logs to S3 Intelligent-Tiering after 30 days.
- E
Use an S3 Lifecycle policy to transition the logs to S3 Standard-IA after 30 days, then to S3 Glacier Deep Archive after 365 days.
Show answer and explanation
Correct answers: A, E
Explanation
To optimize storage costs, you can use S3 Lifecycle policies to transition objects between storage classes based on their access patterns and retention requirements. In this scenario, moving the logs to S3 Standard-IA after 30 days (when access frequency declines) and then to a long-term archival storage class like S3 Glacier or S3 Glacier Deep Archive after an appropriate period ensures compliance with retention policies while minimizing costs.
- A. Correct.
Correct: S3 Lifecycle policies allow you to optimize storage costs by transitioning objects to lower-cost storage classes based on their access patterns. Moving the logs to S3 Standard-IA after 30 days and S3 Glacier after 90 days is a valid cost-effective approach.
- B. Incorrect.
Incorrect: Deleting the logs after 30 days would violate the regulatory requirements to retain the data for 7 years.
- C. Incorrect.
Incorrect: Transitioning logs to S3 Glacier Deep Archive after only 30 days would not be ideal, as S3 Glacier Deep Archive is designed for data that is accessed very infrequently and not suitable for potential access within the first 90 days.
- D. Incorrect.
Incorrect: S3 Intelligent-Tiering is not the most cost-effective solution for data with predictable access patterns, such as the logs in this scenario.
- E. Correct.
Correct: Transitioning the logs to S3 Standard-IA after 30 days and then to S3 Glacier Deep Archive after 365 days provides a cost-effective solution that aligns with the data lifecycle and regulatory requirements.