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Difficulty: EasyHigh-Performing and Scalable Storage Solutions

A company is deploying a fleet of web servers on Amazon EC2 instances that must concurrently access a single shared file system. The storage solution must support standard file system protocols and scale automatically to handle throughput spikes. Which AWS storage service should a solutions architect select?

  1. Amazon Elastic File System (Amazon EFS)Answer
  2. B
    Amazon Elastic Block Store (Amazon EBS) gp3 volume
  3. C
    Amazon EBS io2 volume with Multi-Attach enabled
  4. D
    Amazon S3 Glacier Flexible Retrieval

Answer

Amazon Elastic File System (Amazon EFS)
Amazon Elastic File System (Amazon EFS) is correct because it is a managed file storage service that allows multiple EC2 instances to connect concurrently using standard NFSv4, scaling capacity and throughput automatically as files are added.

Step-by-Step Solution

1
Analyze the business scenario and identify the access requirements.
Multiple Amazon EC2 instances require concurrent read/write access to a single file system.
This rules out standard Amazon EBS gp3 block storage volumes which can only be attached to a single instance at a time.
2
Determine the required protocol and storage characteristics.
The solution must support standard file system protocols (NFSv4) and scale throughput automatically.
Amazon EFS supports standard file-level protocols, scales automatically, and supports concurrent access, making it the appropriate choice.

Key Concept

Differentiating between block storage (EBS) and fully managed shared file storage (EFS) for concurrent instance access.
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High-Performing and Scalable Storage Solutions

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