AWS Certified Cloud Practitioner (CLF-C02)Cloud Technology and ServicesEasy
A data processing company needs to store petabytes of historical sensor data for long-term archiving. This data is rarely accessed (perhaps once a year or less) but must be retained for regulatory compliance for several decades. Retrieval times can be flexible, ranging from minutes to hours. Which Amazon S3 storage class is the MOST cost-effective for this requirement?
- AS3 Intelligent-Tiering
- BS3 Standard
- CS3 Glacier Deep Archive
- DS3 Glacier Instant Retrieval
Show answer & explanationAnswer & explanation
Correct answer: C. S3 Glacier Deep Archive
Amazon S3 Glacier Deep Archive is Amazon S3's lowest-cost storage class, designed for long-term archival of data that is accessed rarely (once or twice a year) and can tolerate retrieval times of 12 hours or more. It is ideal for regulatory compliance and data retention for decades, offering significant cost savings for such use cases.
Why the other options are wrong
- A. S3 Intelligent-Tiering automatically moves data between access tiers, but for data known to be rarely accessed for decades, directly placing it in Deep Archive is more cost-effective.
- B. S3 Standard is for frequently accessed data and would be prohibitively expensive for rarely accessed, petabyte-scale archives.
- D. S3 Glacier Instant Retrieval is for archiving data that needs to be retrieved in milliseconds, making it more expensive than Deep Archive for data that can tolerate longer retrieval times.
S3 Glacier Deep Archive
Amazon S3's lowest-cost storage class for long-term archive data that is accessed rarely (once or twice a year) and can tolerate retrieval times of 12 hours or more.
- Lowest cost storage option in S3.
- Designed for retention periods of decades.
- Retrieval times range from 12-48 hours (standard) or faster (expedited, more cost).
Memory trick: Deep Archive: Deepest savings for deepest sleep.