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Difficulty: MediumAWS Storage Services

A financial analytics company is running a simulation application on Amazon EC2. The application generates a massive volume of temporary scratch data during each analysis run. This data requires sub-millisecond, high-throughput read/write operations. The data is regenerated in subsequent runs, meaning the company does not need it to persist if the EC2 instance is stopped or terminated. Which AWS storage option is the most cost-effective and provides the lowest latency for this workload?

  1. A
    Amazon Elastic File System (Amazon EFS)
  2. Amazon EC2 Instance StoreAnswer
  3. C
    Amazon Elastic Block Store (Amazon EBS) Provisioned IOPS SSD
  4. D
    Amazon Simple Storage Service (Amazon S3) Standard

Answer

Amazon EC2 Instance Store
Amazon EC2 Instance Store is the ideal solution because it provides temporary block-level storage physically attached to the host system. This direct attachment ensures the lowest latency and highest throughput. Because the storage is temporary, the data is lost when the instance is stopped or terminated, which matches the requirement that scratch data does not need to persist. Additionally, instance store is included in the cost of the EC2 instance, making it the most cost-effective choice.

Step-by-Step Solution

1
Analyze the application requirements.
The application requires high-throughput, sub-millisecond latency storage for temporary scratch data that does not need to persist if the instance terminates.
This helps filter storage options based on durability, latency, and cost.
2
Compare AWS storage options against these requirements.
An EC2 Instance Store is physically attached to the host, offering very low latency, and its lifecycle is tied to the instance (data is lost on instance stop/termination), which matches the non-persistent requirement at no extra cost. EBS and EFS provide persistent storage with higher latencies or higher costs.
Matching the features of AWS storage services to determine the most cost-effective and highest-performing option.

Key Concept

AWS temporary vs persistent block storage options
Estimated Time:1m 30s
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Topics

AWS Storage Services

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