DEA-C01 Question 231
Select 3A company is building a data lake on Amazon S3 to store large volumes of data generated daily. The data is accessed frequently for the first 30 days, less frequently for the next 60 days, and is rarely accessed after 90 days. How can the company optimize the cost of storage based on the data lifecycle?
- A
Use S3 Standard for the first 30 days, S3 Standard-IA for the next 60 days, and S3 Glacier Deep Archive after 90 days.
- B
Keep all data in S3 Standard to ensure low-latency access for all use cases.
- C
Use S3 Lifecycle policies to automatically transition objects between storage classes based on access patterns.
- D
Manually move data to S3 Glacier Deep Archive after 90 days to reduce costs.
- E
Use S3 Intelligent-Tiering to automatically optimize costs by automatically moving data to the most cost-effective storage class.
Show answer and explanation
Correct answers: A, C, E
Explanation
To optimize storage costs based on the data lifecycle, it's important to use storage classes that match the data's access patterns. S3 Standard suits frequently accessed data, S3 Standard-IA suits less frequently accessed data, and S3 Glacier Deep Archive suits rarely accessed data. S3 Lifecycle policies automate transitions between these classes, while S3 Intelligent-Tiering dynamically optimizes storage costs without the need for predefined lifecycle rules. Combining these approaches ensures cost efficiency while minimizing operational overhead.
- A. Correct.
Correct: This approach uses appropriate storage classes based on the data lifecycle. S3 Standard is optimized for frequent access, S3 Standard-IA for infrequent access, and S3 Glacier Deep Archive for long-term, rarely accessed data, making it cost-efficient.
- B. Incorrect.
Incorrect: Keeping all data in S3 Standard is unnecessary and expensive, as it doesn’t account for the changing access patterns of the data over time.
- C. Correct.
Correct: S3 Lifecycle policies automate the process of transitioning objects between storage classes, ensuring cost optimization without manual intervention.
- D. Incorrect.
Incorrect: Manually moving data is error-prone and operationally inefficient. Automation via Lifecycle policies or Intelligent-Tiering is a better choice.
- E. Correct.
Correct: S3 Intelligent-Tiering automatically moves data to the most cost-effective storage class based on access patterns, reducing the need for manual configuration while optimizing costs.