AWS Certified Solutions Architect - Associate
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A company is building a web-based application running on Amazon EC2 instances in multiple Availability Zones. The web application will provide access to a repository of text documents totaling about 900 TB in size. The company anticipates that the web application will experience periods of high demand. A solutions architect must ensure that the storage component for the text documents can scale to meet the demand of the application at all times. The company is concerned about the overall cost of the solution.
Which storage solution meets these requirements MOST cost-effectively?
Other
Community
UAnonymous
A
Amazon Elastic Block Store (Amazon EBS)
B
Amazon Elastic File System (Amazon EFS)
C
Amazon OpenSearch Service (Amazon Elasticsearch Service)
D
Amazon S3
Explanation:
Explanation
Amazon S3 is the most cost-effective solution for this scenario because:
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Massive Scale (900 TB): Amazon S3 is designed for exabyte-scale storage and can easily handle 900 TB of text documents without any scaling limitations.
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Cost-Effectiveness:
- Amazon EBS: Would require provisioning large volumes (900 TB) which would be extremely expensive and require complex management across multiple instances.
- Amazon EFS: While scalable, EFS is more expensive than S3 for large storage volumes and is better suited for shared file systems.
- Amazon OpenSearch Service: This is a search and analytics service, not a primary storage solution for 900 TB of documents.
- Amazon S3: Offers the lowest cost per GB for large storage volumes with pay-as-you-go pricing and no minimum commitments.
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Scalability: S3 automatically scales to handle any amount of data and any level of request traffic without provisioning.
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High Availability: S3 provides 99.999999999% (11 9's) durability and 99.99% availability across multiple Availability Zones.
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Integration: EC2 instances can access S3 through the AWS SDK, AWS CLI, or mount via S3 File Gateway if file system semantics are needed.
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Performance: For periods of high demand, S3 can handle thousands of requests per second and supports parallel access from multiple EC2 instances.
Alternative considerations:
- If the application requires file system semantics, Amazon EFS could be considered but would be more expensive.
- If low-latency block storage is absolutely required, EBS might be needed but would be cost-prohibitive at 900 TB scale.
- OpenSearch is inappropriate as it's a search engine, not a primary storage solution.
Best Practice: For large-scale, cost-effective object storage with unpredictable demand patterns, Amazon S3 is the optimal choice.
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