Dynamic

Amazon EFS vs Azure Files

Pick EFS when you need POSIX-compliant storage mounted read-write across dozens-to-thousands of EC2/ECS/EKS/Lambda instances at once — shared CMS uploads, or training data mounted by an autoscaling GPU fleet meets developers should use azure files when building applications that need shared file storage accessible from multiple azure virtual machines, on-premises servers, or cloud services, particularly for lift-and-shift migrations of legacy applications relying on file shares. Here's our take.

🧊Nice Pick

Amazon EFS

Pick EFS when you need POSIX-compliant storage mounted read-write across dozens-to-thousands of EC2/ECS/EKS/Lambda instances at once — shared CMS uploads, or training data mounted by an autoscaling GPU fleet

Amazon EFS

Nice Pick

Pick EFS when you need POSIX-compliant storage mounted read-write across dozens-to-thousands of EC2/ECS/EKS/Lambda instances at once — shared CMS uploads, or training data mounted by an autoscaling GPU fleet

Pros

  • +Skip it for Windows-native shares: Azure Files' SMB + Active Directory integration beats EFS's NFS-only model, and for raw HPC throughput, FSx for Lustre or Google Filestore Zonal (up to 26 GiBps, 920K IOPS) outrun EFS's 20-60 GiBps ceiling
  • +Related to: amazon-ec2, amazon-eks

Cons

  • -Specific tradeoffs depend on your use case

Azure Files

Developers should use Azure Files when building applications that need shared file storage accessible from multiple Azure virtual machines, on-premises servers, or cloud services, particularly for lift-and-shift migrations of legacy applications relying on file shares

Pros

  • +It is ideal for hybrid environments where consistent file access is required across cloud and on-premises infrastructure, and for scenarios like content management, user profile storage, or shared configuration files in containerized applications
  • +Related to: azure-blob-storage, azure-active-directory

Cons

  • -Specific tradeoffs depend on your use case

The Verdict

Use Amazon EFS if: You want skip it for windows-native shares: azure files' smb + active directory integration beats efs's nfs-only model, and for raw hpc throughput, fsx for lustre or google filestore zonal (up to 26 gibps, 920k iops) outrun efs's 20-60 gibps ceiling and can live with specific tradeoffs depend on your use case.

Use Azure Files if: You prioritize it is ideal for hybrid environments where consistent file access is required across cloud and on-premises infrastructure, and for scenarios like content management, user profile storage, or shared configuration files in containerized applications over what Amazon EFS offers.

🧊
The Bottom Line
Amazon EFS wins

Pick EFS when you need POSIX-compliant storage mounted read-write across dozens-to-thousands of EC2/ECS/EKS/Lambda instances at once — shared CMS uploads, or training data mounted by an autoscaling GPU fleet

Disagree with our pick? nice@nicepick.dev