AWS Certified Solutions Architect - Associate
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A company needs to export its database once a day to Amazon S3 for other teams to access. The exported object size varies between 2 GB and 5 GB. The S3 access pattern for the data is variable and changes rapidly. The data must be immediately available and must remain accessible for up to 3 months. The company needs the most cost-effective solution that will not increase retrieval time.
Which S3 storage class should the company use to meet these requirements?
Other
Community
UAnonymous
A
S3 Intelligent-Tiering
B
S3 Glacier Instant Retrieval
C
S3 Standard
D
S3 Standard-Infrequent Access (S3 Standard-IA)
Explanation:
Explanation
S3 Intelligent-Tiering is the correct choice because:
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Variable and rapidly changing access patterns - S3 Intelligent-Tiering automatically moves objects between two access tiers (frequent and infrequent) based on changing access patterns. This is ideal when access patterns are unpredictable.
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Immediate availability - Unlike Glacier storage classes, S3 Intelligent-Tiering provides immediate access to data without retrieval delays.
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Cost-effectiveness - For data with variable access patterns, S3 Intelligent-Tiering optimizes costs by automatically moving less frequently accessed objects to the infrequent access tier, while keeping frequently accessed objects in the frequent access tier.
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3-month retention - The data needs to remain accessible for up to 3 months, which fits well with S3 Intelligent-Tiering's automatic tiering capabilities.
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No retrieval time increase - The requirement states the solution should not increase retrieval time, which S3 Intelligent-Tiering satisfies as it maintains immediate access.
Why not the other options:
- B. S3 Glacier Instant Retrieval: While cost-effective, it has retrieval fees and is designed for long-term archival with immediate retrieval needs, not for rapidly changing access patterns.
- C. S3 Standard: Most expensive option for infrequently accessed data, not cost-effective for this use case.
- D. S3 Standard-IA: Has minimum storage duration charges (30 days) and retrieval fees, making it less optimal for variable access patterns compared to Intelligent-Tiering.
Key AWS Concepts:
- S3 Intelligent-Tiering has no retrieval fees and automatically optimizes costs based on access patterns
- It monitors access patterns and moves objects between tiers without performance impact
- Perfect for unpredictable access patterns where you want to optimize costs without management overhead
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