Save up to 92% on file storage

Maximizing operational efficiency and reducing total cost of ownership are common drivers for moving business applications to the cloud.

Amazon Elastic File System (Amazon EFS) provides a simple, scalable, fully managed, elastic, NFS file system for use with AWS Cloud services and on-premises resources. Amazon EFS Infrequent Access (EFS IA) is a storage class that provides price/performance that is cost-optimized for files not accessed everyday, with storage prices up to 92% lower compared to Amazon EFS Standard. The EFS IA storage class costs only $0.025/GB-month*.

Using the industry accepted estimate that 20% of data is actively used and 80% is infrequently accessed, you can store your files on EFS at an effective price as low as $0.08/GB-month* (20% x $0.30/GB-month for files stored on EFS Standard + 80% x $0.025/GB-month for files stored on EFS IA = $0.08/GB-month).

To get started with EFS IA, simply enable EFS Lifecycle Management for your file system by selecting a lifecycle policy that matches your needs. EFS will automatically move your files to the lower cost EFS IA storage class based on the last time they were accessed. EFS transparently serves files from both storage classes - EFS Standard and EFS IA - from a common file system namespace, so you don't have to worry about which of your files are actively used and which are infrequently accessed.

*pricing in US East (N. Virginia) region


Optimize Costs with Amazon EFS IA - demo (3:04)

How it works

  1. Create file system
  2. Choose Lifecycle Management file access policy (7, 14, 30, 60, or 90 days) using the AWS CLI, API, or EFS Management Console
  3. Files not accessed according to the age-off policy are moved to EFS IA

Use cases for Amazon EFS IA


Backup & Recovery

EFS IA cost effectively stores file data, with industry-leading availability, security and durability enabling you to meet regulatory retention and compliance needs so your backups are protected and available when needed.



Managing the massive volume of big data analytics can be costly and complex for workloads like genomics and geospatial applications. EFS IA cost-effectively stores large amounts of data while providing the same throughput to scale applications with files stored in EFS Standard.


Document Management

Many reporting systems for business applications rely on accessible shared file storage in support of business functions. With EFS IA, customers can now easily and cost-effectively store and access their shared file system, eliminating the need to manage data to control costs.



Scalable, cloud-native file storage at pennies per GB-month with Amazon EFS

Tens of thousands of customers including T-Mobile, MicroStrategy, HERE, and LoanLogics are storing up to petabytes of data in Amazon Elastic File System (Amazon EFS), to power use cases such as lift-and-shift of enterprise applications, large scale analytics, and persistent file storage for containers, at a blended price point of just $0.096/GB-month.

Read the blog »


Reduce file storage TCO

In this tech talk, we introduce the Infrequent Access storage class for Amazon EFS. We will also introduce EFS Lifecycle Management, which automatically transitions infrequently accessed files into the new storage class.

Watch the webinar »


Load, Store, and Protect Linux-based NFS Workloads in AWS

A cloud migration guide for moving Linux-based applications that require Network File System (NFS) storage to AWS. Learn how to use Amazon EFS Infrequent Access (EFS IA).

Read the whitepaper »
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