AWS Certified Cloud Practitioner (CLF-C02)Cloud Technology and ServicesMedium
A manufacturing company needs to store sensor data from IoT devices for long-term archival. The data is rarely accessed (perhaps once a year) but must be retained for compliance reasons for several decades. Cost-effectiveness is a primary concern, and retrieval times of several hours are acceptable. Which Amazon S3 storage class is MOST appropriate?
- AS3 Glacier
- BS3 Standard
- CS3 Glacier Deep Archive
- DS3 Standard-IA
Show answer & explanationAnswer & explanation
Correct answer: C. S3 Glacier Deep Archive
S3 Glacier Deep Archive is the lowest-cost Amazon S3 storage class, ideal for long-term archives that are accessed rarely (e.g., once or twice a year). It offers retrieval options from 12 to 48 hours, aligning with the requirement for multi-decade retention and infrequent access.
Why the other options are wrong
- A. S3 Glacier is for archival data accessed infrequently, with retrieval times from minutes to hours, but S3 Glacier Deep Archive is even more cost-effective for extremely rare access over decades.
- B. S3 Standard is for frequently accessed data and is too expensive for rarely accessed archives.
- D. S3 Standard-IA is for infrequently accessed data but still offers rapid retrieval (milliseconds) and is more expensive than Glacier classes for long-term, rare access.
S3 Glacier Deep Archive
The lowest-cost Amazon S3 storage class, ideal for long-term archives that are accessed rarely (e.g., once or twice a year), with retrieval times of 12-48 hours.
- Lowest cost S3 storage class
- Designed for rare access (once or twice a year)
- Retrieval times: 12-48 hours
- Suitable for multi-decade data retention
Memory trick: S3 classes: Standard for quick, IA for less, Glacier for deep, archive for success.