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SAA-C03 · Question #570

A company wants to migrate from an on-premises data center to AWS. The data center hosts a storage server that stores data in an NFS-based file system. The storage server stores 200 GB of data. The…

The correct answer is B. Create an Amazon Elastic File System (Amazon EFS) file system. E. Install an AWS DataSync agent in the on-premises data center. Use a DataSync task between. Amazon EFS is a "fully managed, elastic, shared file system" that provides NFSv4 access across many EC2 instances and AZs, ideal for lift-and-shift of Linux NFS workloads. AWS DataSync "automates moving data between on-premises NFS servers and Amazon EFS," performing…

Submitted by eva_at· Mar 4, 2026Design Cost-Optimized Architectures

Question

A company wants to migrate from an on-premises data center to AWS. The data center hosts a storage server that stores data in an NFS-based file system. The storage server stores 200 GB of data. The company needs to migrate the data without interruption to existing services. Multiple resources in AWS must be able to access the data by using the NFS protocol. Which combination of steps will meet these requirements MOST cost-effectively? (Select TWO.)

Options

  • ACreate an Amazon FSx for Lustre file system.
  • BCreate an Amazon Elastic File System (Amazon EFS) file system.
  • CCreate an Amazon S3 bucket to receive the data.
  • DCreate an Amazon FSx for Windows file system.
  • EInstall an AWS DataSync agent in the on-premises data center. Use a DataSync task between

How the community answered

(25 responses)
  • A
    4% (1)
  • B
    80% (20)
  • C
    4% (1)
  • D
    12% (3)

Explanation

Amazon EFS is a "fully managed, elastic, shared file system" that provides NFSv4 access across many EC2 instances and AZs, ideal for lift-and-shift of Linux NFS workloads. AWS DataSync "automates moving data between on-premises NFS servers and Amazon EFS," performing incremental, parallel transfers with encryption and integrity checks, enabling cutover with minimal disruption. FSx for Lustre (A) targets HPC and S3-backed workloads, not general NFS shares. FSx for Windows (D) exposes SMB, not NFS. S3 (C) is object storage and not directly NFS- accessible by multiple EC2 hosts. EFS + DataSync satisfies NFS compatibility, multi-client access, and low-touch migration while remaining cost-effective for a 200-GB dataset.

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