SAA-C03 Question 418
Single answerA company is building a data analytics application that ingests large volumes of data and processes it to generate daily reports. The application has two distinct access patterns: (1) frequently accessed data for the last 7 days and (2) infrequently accessed historical data older than 7 days. Which storage solution provides the most cost-effective yet performant architecture for this use case?
- A
Store all data in Amazon S3 Standard storage class.
- B
Store data for the last 7 days in Amazon S3 Standard and move older data to S3 Glacier Deep Archive using lifecycle policies.
- C
Store data for the last 7 days in Amazon S3 Intelligent-Tiering and move older data to S3 Glacier using lifecycle policies.
- D
Store all data in Amazon S3 One Zone-IA to lower costs.
Show answer and explanation
Correct answer: C
Explanation
The most effective solution leverages Amazon S3 Intelligent-Tiering for the frequently accessed data (last 7 days), as it automatically moves data between access tiers to optimize costs. For older, infrequently accessed data, S3 Glacier provides a balance of low storage costs and reasonable retrieval times, which is ideal for the historical data in this use case. Lifecycle policies automate the transition of data between these storage classes.
- A. Incorrect.
Storing all data in Amazon S3 Standard is not cost-efficient for infrequently accessed historical data, as S3 Standard is optimized for frequent access and charges higher storage costs.
- B. Incorrect.
S3 Glacier Deep Archive provides the lowest storage costs, but it may not be suitable for the access pattern described, as retrieval times are high and not ideal for occasional queries on historical data.
- C. Correct.
Using S3 Intelligent-Tiering for frequently accessed data and moving older data to S3 Glacier provides a balance between performance and cost-effectiveness. Intelligent-Tiering automatically optimizes costs for frequently accessed data, while S3 Glacier offers low-cost storage for infrequently accessed data with reasonable retrieval times.
- D. Incorrect.
S3 One Zone-IA is not suitable for critical data requiring high durability, and it does not offer as much cost savings as S3 Glacier for infrequent access patterns.