DEA-C01 Question 233
Select 2You are working as a data engineer for a company that processes large volumes of data daily and uses Amazon S3 to store raw, processed, and archived data. To optimize storage costs based on the data lifecycle, you need to implement a strategy where:
- Frequently accessed raw data is stored for the first 30 days.
- Processed data that is accessed less frequently is stored for 90 days.
- Archived data is rarely accessed but must be retained for 5 years. Which combination of storage classes should you use to minimize costs while meeting these requirements?
- A
Use S3 Standard for raw data, S3 Intelligent-Tiering for processed data, and S3 Glacier Deep Archive for archived data.
- B
Use S3 Standard for raw data, S3 Standard-IA for processed data, and S3 Glacier for archived data.
- C
Use S3 Intelligent-Tiering for raw data, S3 Standard-IA for processed data, and S3 Glacier Deep Archive for archived data.
- D
Use S3 Standard for raw data, S3 Standard for processed data, and S3 Glacier Deep Archive for archived data.
- E
Use S3 Standard-IA for raw data, S3 Standard-IA for processed data, and S3 Glacier for archived data.
Show answer and explanation
Correct answers: A, B
Explanation
To optimize costs based on the data lifecycle, you should assign storage classes based on the data access frequency and retention period. S3 Standard is best for frequently accessed raw data, S3 Standard-IA or S3 Intelligent-Tiering is cost-efficient for infrequently accessed processed data, and S3 Glacier or S3 Glacier Deep Archive is optimal for rarely accessed archived data. These combinations minimize storage costs while meeting access and retention requirements.
- A. Correct.
This is correct as S3 Standard is suitable for frequently accessed raw data, S3 Intelligent-Tiering optimizes costs automatically for data with unpredictable access patterns, and S3 Glacier Deep Archive is the most cost-effective option for rarely accessed archived data.
- B. Correct.
This is correct because S3 Standard handles frequently accessed raw data, S3 Standard-IA is cost-effective for infrequently accessed processed data, and S3 Glacier is appropriate for less frequently accessed archived data with slightly higher retrieval costs compared to Glacier Deep Archive.
- C. Incorrect.
This is incorrect because S3 Intelligent-Tiering for raw data is unnecessary since the access pattern for raw data is predictable (frequent access for 30 days).
- D. Incorrect.
This is incorrect as using S3 Standard for processed data would unnecessarily increase costs; S3 Standard-IA or Intelligent-Tiering would be more cost-effective.
- E. Incorrect.
This is incorrect because S3 Standard-IA is not ideal for raw data that is frequently accessed, leading to higher retrieval costs.