DEA-C01 Question 227
Select 2A retail company processes customer transaction data and needs to store it cost-effectively based on access patterns. Recent transactions (hot data) need to be accessed frequently for reporting, while older transactions (cold data) are rarely accessed but must be retained for compliance. Which combination of AWS services and storage classes should you use to address both hot and cold data requirements?
- A
Store hot data in Amazon S3 Standard and cold data in Amazon S3 Glacier Deep Archive.
- B
Store hot data in Amazon S3 Intelligent-Tiering and cold data in Amazon S3 Glacier Flexible Retrieval.
- C
Store hot data in Amazon S3 Standard-Infrequent Access and cold data in Amazon S3 Glacier Instant Retrieval.
- D
Store both hot and cold data in Amazon S3 One Zone-Infrequent Access.
- E
Store hot data in Amazon S3 Standard and move cold data to Amazon S3 Glacier Flexible Retrieval using S3 Lifecycle Policies.
Show answer and explanation
Correct answers: A, E
Explanation
To optimize costs and performance, hot data should be stored in Amazon S3 Standard for frequent access, while cold data should be stored in an archival storage class such as Amazon S3 Glacier Flexible Retrieval or Amazon S3 Glacier Deep Archive. S3 Lifecycle Policies can automate the transition of data from S3 Standard to Glacier storage classes based on predefined age criteria, providing a cost-effective and scalable solution.
- A. Correct.
This option is correct because Amazon S3 Standard is designed for frequently accessed (hot) data, and Amazon S3 Glacier Deep Archive is an extremely cost-effective storage class for rarely accessed (cold) data.
- B. Incorrect.
This option is incorrect because S3 Intelligent-Tiering is better suited for mixed or unpredictable access patterns, but it does not provide the cost savings of Amazon S3 Glacier Flexible Retrieval for cold data. Additionally, Intelligent-Tiering incurs monitoring fees.
- C. Incorrect.
This option is incorrect because S3 Standard-Infrequent Access is not designed for frequently accessed (hot) data. It is optimized for infrequent access and would increase costs for hot data due to retrieval charges.
- D. Incorrect.
This option is incorrect because S3 One Zone-Infrequent Access sacrifices data durability by storing data in a single Availability Zone and is not recommended for hot or compliance-critical cold data.
- E. Correct.
This option is correct because Amazon S3 Standard is optimized for hot data, and S3 Glacier Flexible Retrieval is a suitable and cost-effective choice for cold data. Using S3 Lifecycle Policies to transition data ensures seamless management of the storage lifecycle.