Free Tier
EFS Free Tier is available in the Amazon Web Services China (Ningxia) Region operated by NWCD and Amazon Web Services China (Beijing) Region operated by Sinnet. The Free Tier includes 5 GB of storage each month for one year.
With Amazon EFS, you pay only for the resources that you use. There is no minimum fee and there are no set-up charges.
Amazon EFS offers four storage classes: the Amazon EFS Standard storage class, the Amazon EFS Standard-Infrequent Access storage class (EFS Standard-IA), the Amazon EFS One Zone storage class, and the Amazon EFS One Zone-Infrequent Access (Amazon EFS One Zone-IA) storage class. Infrequent Access storage classes provide price/performance that's cost-optimized for files not accessed every day. To load data into Infrequent Access storage, simply enable Lifecycle Management for your file system and reduce your storage costs by up to 91%.
Industry research and customer analysis shows that on average, 20% of files are actively used and 80% are infrequently accessed. Using that estimate, you can store your files on Amazon EFS at an effective price of ¥0.589/GB-month for file systems using regional storage classes, and ¥0.3136 for file systems using One Zone storage classes*. See below for detailed pricing examples.
Amazon EFS Standard Storage Class
The 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.
Amazon EFS Standard-Infrequent Access Storage Class
The Amazon EFS Standard-Infrequent Access (EFS Standard-IA) storage class is cost-optimized for files accessed less frequently. Data stored on Amazon EFS Standard-IA costs less than data stored on Amazon EFS Standard and you will pay a fee each time you read from or write to a file.
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, and 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 (EFS One Zone-IA) storage class is cost-optimized for files accessed less frequently. Data stored on EFS One Zone-IA costs less than data stored in the EFS One Zone and you will pay a fee each time you read from or write to a file. Data is stored within a single Availability Zone, and 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 or EFS One Zone storage. 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
Amazon Elastic File System (Amazon EFS) is a simple, serverless, set-and-forget, elastic file system. There is no minimum fee or set-up charge. 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.
Amazon EFS offers four storage classes: two standard storage classes, including Amazon EFS Standard and Amazon EFS Standard-Infrequent Access (EFS Standard-IA), and two One Zone storage classes, including Amazon EFS One Zone and Amazon EFS One Zone-Infrequent Access (EFS One Zone-IA).
For more information visit EFS Infrequent Access [hyperlink to EFS Infrequent Access web page].
Amazon EFS Replication
Use EFS Replication to replicate your file system to a Region or AZ of your choice without having to manage additional infrastructure or custom processes. In the destination Region, you pay for storage and any applicable read/write data access charges in EFS Infrequent Access storage classes when EFS Lifecycle Management is enabled. Amazon EFS will copy its data to a destination file system in the Amazon Web Services Region of your choice. For replication across Regions, you pay for inter-Region Data Transfer OUT charges to the destination Region. For same Region replication of file systems in EFS One Zone-Standard and EFS One Zone-IA storage classes across AZs, you are charged for Data Transfer OUT from Amazon EC2 to Amazon EC2 in another Availability Zone in the same Amazon Web Services Region. For more information, refer to Amazon EC2 Data Transfer section within the Amazon EC2 On-Demand Pricing page.
Pricing Table
China (Ningxia) Region
| Effective Storage Pricing with Lifecycle Management enabled* | Pricing | |
| Standard Storage (GB-Month) | ¥0.589 | ¥2.145 |
| Standard-Infrequent Access Storage (GB-Month) | ¥0.200 | |
| One Zone Storage (GB-Month) | ¥0.3136 | ¥1.14 |
| One Zone-Infrequent Access Storage (GB-Month) | ¥0.107 | |
| Infrequent Access Requests (per GB transferred) | ¥0.071 | ¥0.071 |
| Provisioned Throughput (MB/s-Month) | ¥42.891 | ¥42.891 |
| Elastic Throughput Requests - Data and Metadata Reads (per GB transferred) | ¥0.215 | ¥0.215 |
| Elastic Throughput Requests - Data and Metadata Writes (per GB transferred) | ¥0.429 | ¥0.429 |
*Assumes 80% of your storage in EFS Standard-IA or EFS One- Zone- IA
China (Beijing) Region
| Effective Storage Pricing with Lifecycle Management enabled* | Pricing | |
| Standard Storage (GB-Month) | ¥0.649 | ¥2.359 |
| Standard-Infrequent Access Storage (GB-Month) | ¥0.222 | |
| One Zone Storage (GB-Month) | ¥0.3464 | ¥1.26 |
| One Zone-Infrequent Access Storage (GB-Month) | ¥0.118 | |
| Infrequent Access Requests (per GB transferred) | ¥0.079 | ¥0.079 |
| Provisioned Throughput (MB/s-Month) | ¥47.180 | ¥47.180 |
| Elastic Throughput Requests - Data and Metadata Reads (per GB transferred) | ¥0.236 | ¥0.236 |
| Elastic Throughput Requests - Data and Metadata Writes (per GB transferred) | ¥0.472 | ¥0.472 |
*Assumes 80% of your storage in EFS Standard-IA or EFS One- Zone- IA
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 the EFS Standard or EFS One Zone storage class and 80% is stored in the EFS Standard-IA or EFS One Zone-IA storage class, 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 or EFS One Zone 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 China (Ningxia) region, operated by NWCD region, uses 100 GB of EFS One Zonestorage, 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-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-IA storage charge: 297,600 GB-Hours x (1 month / 744 hours) x ¥0.107 /GB-month = ¥42.80
Total Monthly Storage Charge: ¥114 + ¥42.80 = ¥156.580 or ¥0.3136/GB-month
Example 2:
Assume your file system is located in the China (Ningxia) region, operated by NWCD, 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 ¥2.145/GB-month = ¥214.50
Total EFS Standard-IA storage charge: 297,600 GB-Hours x (1 month / 744 hours) x ¥0.2 /GB-month = ¥80.00
Total Monthly Storage Charge: ¥214.50 + ¥80.00 = ¥294.50 or ¥0.589/GB-month
Example 3:
This example compares two scenarios in which you store 100 GB on EFS Standard and 400 GB on EFS Standard-IA in the China (Ningxia) region, operated by NWCD.
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 you are entitled to a baseline throughput of 5 MB/s in both scenarios because you are 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): ¥294.50
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): ¥294.50
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 ¥42.891 = ¥214.455
Total monthly charge = Total monthly storage charge + Total monthly throughput charge = ¥294.50 + ¥214.455 = ¥508.955
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. The example assumes that the two EFS Lifecycle policies to move files between EFS Standard and EFS Standard-IA are set.
Assume your file system is located in the China (Ningxia) region, operated by NWCD. 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, 10 different clients read them all in full once per month. The 800 GB of files read are moved to EFS Standard.
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 ¥2.145/GB-month = ¥1203.968
Total EFS Standard-IA storage charge: 326,400 GB-Hours x (1 month / 744 hours) x ¥0.2/GB-month = ¥87.742
Total EFS storage charge: ¥1203.968.50 + ¥87.742= ¥1291.710
Next, we calculate the access charges for files in Amazon EFS Standard-IA:
Writes: 800 GB * ¥0.071/GB = ¥56.8
Lifecycle transition to EFS Standard due to reads to files in EFS Standard-IA: 800 GB * ¥0.071/GB = ¥56.8 (once for 10 clients)
Total EFS Standard-IA access charges: ¥56.8+¥56.8=¥113.6
Finally, we calculate the total EFS charge for the month:
Total monthly charges = Total storage charge + Total access charge = ¥1,291.710 + ¥113.6= ¥1,405.31
Example 5:
This example reflects a scenario where you are replicating file systems across Regions using Amazon EFS Replication. The example is focused on costs directly related to EFS Replication.
Assume you have an Amazon EFS file system in the China (Ningxia) Region, operated by NWCD with 1TB of data. 200 GB of this data resides in the EFS Standard storage class and 800 GB in the EFS Standard-IA storage class. This file system is being replicated to the China (Beijing) Region, operated by Sinnet. Assume the destination file system uses a 7-day EFS Lifecycle Management Policy to move files into the EFS Standard-IA storage class.
When replication is first turned on, the entire source file system is copied to the destination file system. The replicated data will first land in the EFS Standard storage class in the destination file system. If files aren’t accessed for the duration of the EFS Lifecycle Management policy (7 days), they will move to the EFS Standard-IA storage class.
Initial sync:
First, we calculate the pro-rated storage usage for the destination file system:
Total EFS Standard usage (GB-hours): 1,000 GB * 7 days * (24 hours / day) = 168,000 GB-hours
Total EFS Standard-IA usage (GB-hours): 1,000 GB * 24 days * (24 hours / day / 31-day month) = 576,000 GB-hours
Next, we convert the storage usage into GB-months and calculate the storage charge for the
destination file system:
Total EFS Standard storage charge: 168,000 * (1 month / 744 hours) * ¥2.359/GB-month = ¥532.68
Total EFS Standard-IA storage charge: 576,000 * (1 month / 744 hours) * ¥0.222/GB-month = ¥171.87
Total storage charges for initial sync = ¥532.68 + ¥171.87 = ¥704.55
Data transfer charges for the source file system initial replication will be:
Total EFS Replication data transfer charges for 1 TB of data: 1,000 GB * ¥0.6003/GB = ¥600.3
Total charges for initial sync = Total storage charges for initial sync + Total data transfer charges for initial sync = ¥704.55 + ¥600.3 = ¥1,304.85
Incremental replication:
Consider that the source file systems add 150 GB of new data after 7 days. The new data will be replicated to the destination file system and will reside in the EFS Standard storage class for 7 days based on the Lifecycle Management Policy as before. The pro-rated storage usage for 150 GB of new data is calculated as follows:
Total EFS Standard usage (GB-hours): 150 GB * 7 days * (24 hours / day) = 25,200 GB-hours
Total EFS Standard-IA usage (GB-hours): 150 GB * 17 days * (24 hours / day) = 61,200 GB-hours
Next, we convert the storage usage into GB-months and calculate the storage charge for the 150 GB of new data added to the destination file system:
Total EFS Standard storage charge: 25,200 * (1 month / 744 hours) * ¥2.359/GB-month = ¥79.9
Total EFS Standard-IA storage charge: 61,200 * (1 month / 744 hours) * ¥0.222/GB-month = ¥18.26
Total storage charges for incremental replication = ¥79.9 + ¥18.26 = ¥98.16
Lastly, we calculate the data transfer charges for 150 GB of incremental data:
Total EFS Replication data transfer charges: 150 GB * ¥0.6003/GB = ¥90.05
Total charges for incremental replication = Total storage charges for incremental replication + Total data transfer charges for incremental replication = ¥98.16 + ¥90.05 = ¥188.21
Total charges related to EFS Replication = Total charges for initial sync + Total charges for incremental replication = ¥1,304.85 + ¥188.21 = ¥1,493.06
