AWS Certified Cloud Practitioner
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A company needs to store data across multiple Availability Zones in an AWS Region. The data will not be accessed regularly but must be immediately retrievable.
Which Amazon Elastic File System (Amazon EFS) storage class meets these requirements MOST cost-effectively?
Real Exam
Community
RRitesh
A
EFS Standard
B
EFS Standard-Infrequent Access (EFS Standard-IA)
C
EFS One Zone
D
EFS One Zone-Infrequent Access (EFS One Zone-IA)
Explanation:
Explanation
EFS Standard-Infrequent Access (EFS Standard-IA) is the most cost-effective option because:
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Multi-AZ requirement: The question specifies data needs to be stored across multiple Availability Zones. EFS Standard and EFS Standard-IA both provide multi-AZ redundancy, while EFS One Zone and EFS One Zone-IA only store data in a single Availability Zone.
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Infrequent access pattern: The data "will not be accessed regularly" - this is the perfect use case for infrequent access storage classes which offer lower storage costs for data that is accessed less frequently.
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Immediate retrievability: EFS Standard-IA provides immediate access to data (unlike archival storage like Amazon S3 Glacier), meeting the requirement that data "must be immediately retrievable."
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Cost-effectiveness: EFS Standard-IA offers lower storage costs than EFS Standard, while still providing the same multi-AZ durability and availability. The trade-off is higher per-GB access charges, but since the data is infrequently accessed, this results in overall cost savings.
Why not the other options:
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EFS Standard: More expensive for infrequently accessed data
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EFS One Zone: Only single AZ, doesn't meet multi-AZ requirement
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EFS One Zone-IA: Only single AZ, doesn't meet multi-AZ requirement
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