With Amazon EFS, you pay only for the resources that you use. There is no minimum fee and there are no set-up charges. You pay only for the storage you use, for read and write access to data stored in Infrequent Access storage classes, and any provisioned throughput.

Industry research and customer analysis shows that on average, 20% of files are actively used and 80% are infrequently accessed. Using this estimate, you can store your files on Amazon EFS at an effective price of $0.043/GB-month1 when using EFS One Zone-IA, and $0.08/GB-month1 when using EFS Standard-IA, See below for sample effective pricing in select regions, and detailed pricing examples.

1pricing in the US East (N. Virginia) region

Amazon EFS Standard Storage Class

The EFS Standard storage class is designed for active file system workloads, and you pay only for the amount of file system storage you use per month. Data is stored regionally within and across multiple Availability Zones (AZs).

Amazon EFS Standard-Infrequent Access Storage Class

The EFS Standard-Infrequent Access storage class (EFS Standard-IA) is cost-optimized for files accessed less frequently. Data stored on the EFS Standard-IA storage class costs less than EFS Standard storage class, and you will pay a fee each time you read from or write to a file. Data is stored regionally within and across multiple Availability Zones (AZs).

Amazon EFS One Zone Storage Class

The EFS One Zone storage class is designed for active file system workloads, and you pay only for the amount of file system storage you use per month. Data is stored within a single Availability Zone. Standard data transfer fees apply for inter-AZ or inter-region access to file systems.

Amazon EFS One Zone-Infrequent Access Storage Class

The EFS One Zone-Infrequent Access storage class (EFS One Zone-IA) is cost-optimized for files accessed less frequently. Data stored on the EFS One Zone-IA storage class costs less than the One Zone storage class, and you will pay a fee each time you read from or write to a file. Data is stored within a single Availability Zone. Standard data transfer fees apply for inter-AZ or inter-region access to file systems.

Amazon EFS Bursting Throughput (Default)

In the default Bursting Throughput mode, there are no charges for bandwidth or requests, and you get a baseline rate of 50 KB/s per GB of throughput included with the price of EFS Standard storage class. Read operations are metered at a 1:3 ratio toward this rate, so you can drive up to 150 KB/s per GB of read throughput or 50 KB/s per GB of write throughput with this baseline rate.

Amazon EFS Provisioned Throughput

You can optionally select the Provisioned Throughput mode and provision the throughput of your file system independent of the amount of data stored and pay separately for storage and throughput. Read operations are metered at a 1:3 ratio toward this rate, so you can drive up to 3 MB/s of read throughput or 1 MB/s of write throughput for every 1 MB/s of throughput provisioned. Like the default Bursting Throughput mode, the Provisioned Throughput mode also includes 50 KB/s per GB (or 1 MB/s per 20 GB) of throughput in the price of EFS Standard and EFS One Zone storage classes. You are billed only for the throughput provisioned above what you are provided based on data you have stored.


Pricing Table

Within your first 12 months on AWS, you can use up to 5 GB/month on the EFS Standard storage class for free.

*pricing assumes 80% of your storage in EFS IA


Effective Storage Pricing for file systems using Lifecycle Management (select regions)

Region Effective storage price ($/GB-Mo) - One Zone* Effective storage price ($/GB-Mo) - Standard**
US East (N. Virginia) $0.043 $0.08
US West (Oregon) $0.043 $0.08
Africa (Cape Town) $0.054 $0.1
Asia Pacific (Seoul) $0.047 $0.09
Canada (Central) $0.047 $0.09
Europe (Ireland) $0.046 $0.09
AWS GovCloud (US-East) $0.056 $0.11


*Assumes 80% of data is infrequently accessed and stored in One Zone-IA

**Assumes 80% of data is infrequently accessed and stored in Standard-IA

You can calculate the effective storage price for your region using the example below:

How we calculate Effective Storage Price

File systems using EFS Infrequent Access to transfer infrequently accessed files to IA storage (Standard-IA or One Zone-IA) have a lower effective storage cost per GB-month compared to file systems that do not use EFS Infrequent Access. Save up to 92% on storage costs for infrequently accessed files by enabling Lifecycle Management for your file system. Industry research and customer analysis shows that on average, 20% of files are actively used and 80% are infrequently accessed.
Calculate your effective storage cost per GB-month using the example below (based on One Zone pricing in US East (N. Virginia).
Required inputs:
  1. Total Monthly Storage Required (GB). Ex. 500GB
  2. Percentage of files that are frequently accessed (%) Ex. 20%

Effective storage cost = (Storage cost for frequently accessed data + Storage cost for infrequently accessed data)/Total storage

Example: Effective storage cost = (500 * 20%) * ($0.16) + (500 * 80%) * ($0.0133) / 500 =
= ($16 + $5.32)/500
= $0.043/GB-MO

Pricing Examples

The storage amount billed in a month is based on the average storage space used throughout the month. Your storage usage is measured in "GB-Month," which are added up at the end of the month to generate your monthly charges. These pricing examples assume 20% of your data is stored in a storage class meant for frequently accessed data (ex. EFS Standard or EFS One Zone) and 80% is stored in an infrequent access storage class (ex. EFS Standard-IA or EFS One Zone-IA), following industry-accepted estimates.

The throughput amount billed in a month is based on the average throughput provisioned in excess of what your EFS Standard storage allows for the month. Your throughput is measured in "MB/s-Month", which are added up at the end of the month to generate your monthly charges.

Example 1:

Assume your file system is located in the US East (N. Virginia) region, uses 100 GB of EFS One Zone storage, and uses 400 GB of EFS One Zone-Infrequent Access storage for the entirety of a 31 day month. At the end of the month, you would have the following usage in GB-Hours:

Total EFS One Zone usage (GB-Hours): 100 GB x 31 days x (24 hours / day) = 74,400 GB-Hours
Total EFS One Zone-IA usage (GB-Hours): 400 GB x 31 days x (24 hours / day) = 297,600 GB-Hours

We add up GB-Hours and convert to GB-Month to calculate monthly charges:

Total EFS One Zone storage charge: 74,400 GB-Hours x (1 month / 744 hours) x $0.16/GB-month = $16
Total EFS One Zone-IA storage charge: 297,600 GB-Hours x (1 month / 744 hours) x $0.0133 /GB-month = $5.32

Total Monthly Storage Charge: $16 + $5.32 = $21.32 or $0.043/GB-month

Example 2:
Assume your file system is located in the US East (N. Virginia) region, uses 100 GB of EFS Standard storage, and uses 400 GB of EFS Standard-Infrequent Access storage for the entirety of a 31 day month. At the end of the month, you would have the following usage in GB-Hours:

Total EFS Standard usage (GB-Hours): 100 GB x 31 days x (24 hours / day) = 74,400 GB-Hours
Total EFS Standard-IA usage (GB-Hours): 400 GB x 31 days x (24 hours / day) = 297,600 GB-Hours

We add up GB-Hours and convert to GB-Month to calculate monthly charges:

Total EFS Standard storage charge: 74,400 GB-Hours x (1 month / 744 hours) x $0.30/GB-month = $30.00
Total EFS Standard-IA storage charge: 297,600 GB-Hours x (1 month / 744 hours) x $0.025/GB-month = $10.00

Total Monthly Storage Charge: $30.00 + $10.00 = $40.00 or $.08/GB-month

Example 3:

This example compares two scenarios in which the customer stores 100 GB on EFS Standard and 400 GB on EFS Standard-IA in the US East (N. Virginia) region.

In the first scenario, the customer selects the default Bursting Throughput mode and in the second scenario, the customer configures 10 MB/s of Provisioned Throughput.

Note that the customer is entitled to a baseline throughput of 5 MB/s in both scenarios because she is storing 100 GB of data on Amazon EFS Standard.

Default Bursting Throughput: 100 GB of data in EFS Standard and 400 GB of data in EFS Standard-IA, using the default Bursting Throughput mode

Total monthly storage charge (as above): $40.00

Provisioned Throughput: 100 GB of data in EFS Standard and 400 GB of data in EFS Standard-IA, with 10 MB/s of Provisioned Throughput

Total monthly storage charge (see above calculations): $40.00
Default throughput (MB/s-Hours) = (74,400 GB-Hours / 20 GB-Hours) * 1 MB/s-Hour = 3,720 MB/s-Hours
Total provisioned throughput (MB/s-Hours) = 10 MB/s x 31 x 24 hours/day = 7,440 MB/s-Hours
Total billable provisioned throughput (MB/s-Hours) = 7,440 MB/s-Hours – 3,720 MB/s-Hours = 3,720 MB/s-Hours
Total billable provisioned throughput (MB/s-Month) = 3,720 MB/s-Hours / (31 days/month x 24 hours/day) = 5 MB/s-Month

Total monthly Provisioned Throughput charge = 5 MB/s-Month x 6.00 = $30.00

Total monthly charge = Total monthly storage charge + Total monthly throughput charge = $40.00 + $30.00 = $70.00

Example 4:

The following example reflects a scenario where your file access patterns change over time, and includes each of EFS Standard-IA's pricing dimensions.

Assume your file system is located in the US East (N. Virginia) region. At the beginning of a 31 day month, your file system stores 1 TB of files on EFS Standard. On the 15th day of the month, EFS Lifecycle Management moves 80% of your files to the EFS Standard-IA storage class after 14 days of having not been accessed. Once your infrequently accessed files move to EFS Standard-IA, you read them all in full once per month.

First, we calculate the pro-rated storage usage:

1 TB of EFS Standard storage for 14 days (GB-Hours): 1,000 GB x 14 days x (24 hours / day) = 336,000 GB-Hours
200 GB of EFS Standard storage for 17 days (GB-Hours): 200 GB x 17 days x (24 hours / day) = 81,600 GB-Hours
Total EFS Standard storage usage (GB-Hours): 336,000 GB-Hours + 81,600 GB-Hours = 417,600 GB-Hours
800 GB of EFS Standard-IA storage for 17 days (GB-Hours): 800 GB x 17 x (24 hours / day) = 326,400 GB-Hours

Next, we convert the storage usage into GB-months and calculate the storage charge:

Total EFS Standard storage charge: 417,600 GB-Hours x (1 month / 744 hours) x $0.30/GB-month = $168.39
Total EFS Standard-IA storage charge: 326,400 GB-Hours x (1 month / 744 hours) x $0.025/GB-month = $10.97
Total EFS storage charge: $168.39 + $10.97 = $179.36

Next, we calculate the access charges for files in EFS Standard-IA:

Lifecycle Management transitions from EFS Standard to EFS Standard-IA 

Writes: 800 GB * $0.01/GB = $8
Reads to files in EFS Standard-IA: 800 GB * $0.01/GB = $8
Total EFS Standard-IA access charges: $8 + $8 = $16

Finally, we calculate the total EFS charge for the month:

Total monthly charge = Total storage charge + Total access charge = $179.36 + $16 = $195.36


Data Transfer

Moving your Amazon EFS file data can be managed simply with AWS DataSync.

DataSync

To simplify and accelerate data transfers in and out of Amazon EFS, you can use AWS DataSync, a managed online data transfer service. DataSync’s usage-based pricing is simple and predictable. You pay only for data transferred, at a flat, per-gigabyte rate—no software licenses, contracts, maintenance fees, development cycles or required hardware.

Learn more>>


Backup

Backing up your Amazon EFS file data can be managed simply with AWS Backup.

AWS Backup

To back up your Amazon EFS file data you can use AWS Backup, a fully managed backup service that makes it easy to centralize and automate the back up of data across AWS services. AWS Backup provides you with a single place to monitor backup activity and to find and restore backups when needed. With AWS Backup, you pay only for the amount of backup storage you use and the amount of backup data you restore in the month. There is no minimum fee and there are no set-up charges.

Learn more>>


Total Cost of Ownership

Amazon EFS offers price advantages over self-managed cloud alternatives. For more information on how much can be saved, see the Amazon EFS Total Cost of Ownership (TCO) example here.


Additional pricing resources

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