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Zorluk: OrtaAWS Storage Services

A database administrator is configuring a database on an Amazon EC2 instance. The database requires a temporary storage location for scratch space, query caching, and swap files that provides the lowest latency and highest I/O performance. The data in this location does not need to persist if the EC2 instance is stopped or terminated. Which AWS storage option meets these requirements?

  1. A
    Amazon Elastic Block Store (Amazon EBS)
  2. B
    Amazon Simple Storage Service (Amazon S3)
  3. Amazon EC2 Instance StoreCevap
  4. D
    Amazon Elastic File System (Amazon EFS)

Cevap

Amazon EC2 Instance Store
The correct answer is Amazon EC2 Instance Store because it provides block-level storage physically attached to the host computer. This direct attachment delivers the lowest latency and highest I/O performance, making it ideal for temporary scratch space, cache, and swap files. Because it is ephemeral, the data is lost when the instance is stopped or terminated, which aligns with the customer's requirement where persistence is not needed.

Adım Adım Çözüm

1
Analyze the application requirements from the scenario.
Identify key requirements: block-level storage (for query caching, database scratch space, swap files), absolute lowest latency, and data persistence is not required (temporary storage).
This helps narrow down the choices by eliminating storage types that do not match these criteria.
2
Evaluate the storage options based on physical location and persistence.
Identify that instance stores are physically attached to the host, offering the lowest possible latency and temporary lifecycle (ephemeral). EBS, EFS, and S3 are network-accessible and have higher latency.
Choosing the option that matches both performance (locally attached) and lifecycle (ephemeral) requirements guarantees the most optimal design.

Anahtar Kavram

Understanding the difference between ephemeral block storage (Instance Store) and persistent network storage (EBS/EFS/S3) for EC2 instances.
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AWS Storage Services

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