AWS Certified Data Engineer – AssociateData Storage and ManagementHard
A data engineer is designing a highly available and durable storage solution for critical business documents. These documents are infrequently accessed (once a quarter) but must be retrieved within seconds when needed. The budget is a significant constraint, and the solution needs to minimize storage costs while meeting the retrieval performance. Which S3 storage class is most suitable?
- AAmazon S3 Glacier Deep Archive
- BAmazon S3 Standard
- CAmazon S3 Glacier Instant Retrieval
- DAmazon S3 Intelligent-Tiering
Show answer & explanationAnswer & explanation
Correct answer: C. Amazon S3 Glacier Instant Retrieval
Amazon S3 Glacier Instant Retrieval is designed for archived data that needs millisecond retrieval. It offers lower storage costs than S3 Standard or Standard-IA, making it ideal for infrequently accessed data that requires rapid access, balancing cost and performance for this specific use case.
Why the other options are wrong
- A. S3 Glacier Deep Archive offers the lowest cost but has retrieval times of hours to days, which does not meet the 'seconds' retrieval requirement.
- B. S3 Standard is for frequently accessed data and would be too expensive for infrequent access.
- D. S3 Intelligent-Tiering automatically moves data between tiers, but for a clear pattern of infrequent access with rapid retrieval, S3 Glacier Instant Retrieval offers a more direct and potentially cost-effective solution without the overhead of monitoring.
S3 Glacier Instant Retrieval
Amazon S3 Glacier Instant Retrieval is an archive storage class that delivers the lowest cost storage for data that is rarely accessed but requires millisecond retrieval. It's designed for use cases that demand immediate access to archived data, such as medical images, news media assets, or backup data.
- Lowest cost for millisecond retrieval
- Designed for rarely accessed data
- Archival storage class
- Balances cost and performance for rapid archive access
Memory trick: Instant Glacier, Instantly Good for Infrequent.