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SAA-C03 · Question #355

A company is creating a new application that will store a large amount of data. The data will be analyzed hourly and will be modified by several Amazon EC2 Linux instances that are deployed across…

The correct answer is C. Store the data in an Amazon Elastic File System (Amazon EFS) file system. Mount the file system. Amazon Elastic File System (Amazon EFS) is a fully managed, elastic, shared file system that can be mounted concurrently by multiple EC2 instances across multiple Availability Zones. EFS automatically grows and shrinks as files are added or removed, providing seamless…

Submitted by lucia.co· Mar 4, 2026Design High-Performing Architectures

Question

A company is creating a new application that will store a large amount of data. The data will be analyzed hourly and will be modified by several Amazon EC2 Linux instances that are deployed across multiple Availability Zones. The needed amount of storage space will continue to grow for the next 6 months. Which storage solution should a solutions architect recommend to meet these requirements?

Options

  • AStore the data in Amazon S3 Glacier. Update the S3 Glacier vault policy to allow access to the
  • BStore the data in an Amazon Elastic Block Store (Amazon EBS) volume. Mount the EBS volume
  • CStore the data in an Amazon Elastic File System (Amazon EFS) file system. Mount the file system
  • DStore the data in an Amazon Elastic Block Store (Amazon EBS) Provisioned IOPS volume shared

How the community answered

(38 responses)
  • B
    3% (1)
  • C
    92% (35)
  • D
    5% (2)

Explanation

Amazon Elastic File System (Amazon EFS) is a fully managed, elastic, shared file system that can be mounted concurrently by multiple EC2 instances across multiple Availability Zones. EFS automatically grows and shrinks as files are added or removed, providing seamless scalability for unpredictable and growing storage needs. It supports simultaneous access from multiple compute resources, making it ideal for applications where several EC2 instances must read and write to the same data set concurrently. EBS volumes cannot be shared across multiple Availability Zones, and S3 Glacier is intended for archival and infrequent access, not for active, hourly data analysis.

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