AWS Certified Data Engineer – AssociateData Governance and SecurityEasy
A data analytics company needs to archive historical log data for compliance purposes. The data is rarely accessed (less than once a year), but when needed, a retrieval time of 12-48 hours is acceptable. The primary concern is minimizing storage costs while ensuring data durability and compliance with a 10-year retention policy. Which Amazon S3 storage class is the most cost-effective solution for this scenario?
- AS3 One Zone-IA
- BS3 Standard-IA
- CS3 Glacier
- DS3 Glacier Deep Archive
Show answer & explanationAnswer & explanation
Correct answer: D. S3 Glacier Deep Archive
S3 Glacier Deep Archive is designed for long-term archiving of data that is accessed rarely (e.g., once or twice a year) and can tolerate retrieval times of 12-48 hours. It is the lowest-cost S3 storage class, making it ideal for the specified compliance and cost requirements.
Why the other options are wrong
- A. S3 One Zone-IA stores data in a single Availability Zone, offering lower cost than Standard-IA but sacrificing availability, and it's still more expensive than Glacier classes for archival data.
- B. S3 Standard-IA is for data accessed less frequently but requiring rapid access, making it more expensive than Glacier classes.
- C. S3 Glacier is for archival data with retrieval times from minutes to hours, but S3 Glacier Deep Archive is even more cost-effective for extremely rare access.
S3 Glacier Deep Archive
S3 Glacier Deep Archive is Amazon S3's lowest-cost storage class for archiving data that is rarely accessed, with retrieval times ranging from 12 to 48 hours. It is designed for long-term data retention and compliance archival.
- Lowest-cost S3 storage class.
- Designed for long-term archival (e.g., 7-10+ years).
- Retrieval times are typically 12-48 hours.
Memory trick: Deep Archive: Dirt Cheap, Deep Sleep.