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Difficulty: EasyAWS Storage Services

An application running on a single Amazon EC2 instance requires a persistent block storage volume that behaves like a physical hard drive. The storage must retain its data even if the EC2 instance is stopped or terminated. Which AWS storage service should be used to meet these requirements?

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

Answer

Amazon Elastic Block Store (Amazon EBS)
The correct option is Amazon Elastic Block Store (Amazon EBS) because it provides persistent block-level storage volumes for use with EC2 instances. EBS volumes act like raw, unformatted block devices that can be attached to an instance and persist data independently of the instance's life, meaning the data remains intact if the instance is stopped or terminated.

Step-by-Step Solution

1
Analyze the application requirements.
The application needs block storage that behaves like a physical hard drive attached to a single EC2 instance, and the data must survive instance stop or termination.
This helps narrow down the choices by eliminating file storage (EFS) and object storage (S3) which are not block storage devices, and temporary block storage (Instance Store) which does not persist data.
2
Identify the storage service that matches these requirements.
Amazon EBS is the correct service because it provides persistent block storage volumes that can be attached to a single EC2 instance and retain data independently of the instance lifecycle.
Choosing the service that satisfies both the block storage interface and the persistence requirement provides the correct answer.

Key Concept

AWS Block Storage Persistence
Estimated Time:45s
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Topics

AWS Storage Services

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