SAP-C02 Question 342
Select 2A company is migrating its on-premises data to Amazon S3 and wants to optimize costs by using storage tiering. The company has data that is accessed frequently, data that is rarely accessed but needs to be available quickly when required, and archival data that is rarely accessed and does not require immediate retrieval. Which combination of storage classes should the company use to meet its requirements?
- A
S3 Standard for frequently accessed data, S3 Intelligent-Tiering for rarely accessed data, and S3 Glacier Deep Archive for archival data
- B
S3 Standard for frequently accessed data, S3 Standard-IA for rarely accessed data, and S3 Glacier Deep Archive for archival data
- C
S3 One Zone-IA for frequently accessed data, S3 Standard-IA for rarely accessed data, and S3 Glacier for archival data
- D
S3 Standard for frequently accessed data, S3 Intelligent-Tiering for rarely accessed data, and S3 Glacier for archival data
- E
S3 Standard-IA for frequently accessed data, S3 One Zone-IA for rarely accessed data, and S3 Glacier for archival data
Show answer and explanation
Correct answers: B, D
Explanation
To optimize storage costs based on access patterns, S3 Standard is ideal for frequently accessed data due to its high performance and durability. For rarely accessed data with predictable patterns, S3 Standard-IA provides a cost-effective solution with slightly lower availability. For rarely accessed data with unpredictable patterns, S3 Intelligent-Tiering is a better choice as it automatically moves data between access tiers based on usage. For archival data that is rarely accessed and does not require immediate retrieval, S3 Glacier or S3 Glacier Deep Archive are the most cost-effective options.
- A. Incorrect.
This option properly matches S3 Standard for frequently accessed data and S3 Glacier Deep Archive for archival data. However, S3 Intelligent-Tiering is not ideal for rarely accessed data if the access patterns are predictable because it incurs monitoring fees.
- B. Correct.
This option uses S3 Standard for frequently accessed data, S3 Standard-IA for rarely accessed data, and S3 Glacier Deep Archive for archival data, which is an optimal combination for predictable access patterns and cost optimization.
- C. Incorrect.
This option incorrectly uses S3 One Zone-IA for frequently accessed data, which is not recommended due to lower durability and the risk of data loss in a single Availability Zone.
- D. Correct.
This option uses S3 Standard for frequently accessed data, S3 Intelligent-Tiering for rarely accessed data, and S3 Glacier for archival data, which is an optimal combination for use cases where rarely accessed data has unpredictable access patterns.
- E. Incorrect.
This option incorrectly uses S3 Standard-IA for frequently accessed data and S3 One Zone-IA for rarely accessed data, which are not cost-efficient or durable choices for the given access patterns.