DEA-C01 Question 245
Select 2Your company processes large amounts of customer transaction data daily and stores it in Amazon S3. The company has a data retention policy requiring transactional data to be stored for 1 year for active analysis and archived for an additional 4 years to meet compliance requirements. Cost optimization is a priority. Which combination of actions should you take to implement this policy effectively?
- A
Use S3 Standard storage class for the first year and transition data to S3 Glacier Deep Archive after 1 year using an S3 Lifecycle policy.
- B
Use S3 Intelligent-Tiering for the first year and transition data to S3 Glacier after 1 year using an S3 Lifecycle policy.
- C
Use S3 Standard for the first year and delete the data after 1 year using an S3 Lifecycle policy.
- D
Use S3 Standard for the first year and transition data to S3 Infrequent Access for an additional 4 years using an S3 Lifecycle policy.
- E
Use S3 Intelligent-Tiering for the first year and transition data to S3 Glacier Deep Archive for an additional 4 years using an S3 Lifecycle policy.
Show answer and explanation
Correct answers: B, E
Explanation
To implement the given data retention policy cost-effectively, S3 Intelligent-Tiering is used during the first year to optimize costs while maintaining performance and availability. After 1 year, transitioning to S3 Glacier or Glacier Deep Archive ensures compliance with the 4-year archival requirement at the lowest cost. S3 Glacier is suitable for occasional data retrieval during the compliance period, while S3 Glacier Deep Archive is the most cost-effective option for infrequent access.
- A. Incorrect.
Using S3 Standard for the first year ensures high performance but transitioning directly to S3 Glacier Deep Archive does not allow cost-effective access for possible compliance queries during the archive period. S3 Intelligent-Tiering is more cost-efficient for the first year.
- B. Correct.
S3 Intelligent-Tiering dynamically moves objects to lower-cost storage tiers when they are not accessed often, optimizing costs for the first year. Transitioning to S3 Glacier provides a balance between cost and occasional compliance-related data retrieval during the archive period.
- C. Incorrect.
Deleting the data after 1 year would violate the compliance requirement to retain archived data for an additional 4 years.
- D. Incorrect.
Transitioning data to S3 Infrequent Access for 4 years would not be cost-optimal compared to using S3 Glacier for long-term archiving.
- E. Correct.
S3 Intelligent-Tiering for the first year ensures cost-efficiency while maintaining performance. Transitioning to S3 Glacier Deep Archive for the next 4 years offers the lowest-cost storage option for long-term archiving with occasional data retrieval for compliance purposes.