This topic describes the billing items and billing methods of a General-purpose NAS file system. This topic also provides several billing examples.
Billing items
Billing item | Description |
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Usage | The maximum used storage space of a file system. Fees are calculated based on the
maximum used storage space within each hour.
|
Billing methods
- Pay-as-you-go
Formula: Space usage fee = Maximum usage of a NAS file system per hour × Unit price per hourNote
- General-purpose NAS includes two types of file systems: Capacity NAS and Performance NAS. The unit prices for each file system are different.
- In the NAS pricing system, the unit of space usage fees is USD/GiB/month. If the pay-as-you-go billing method is adopted, fees are calculated based on the used storage space multiplied by the unit price per hour. You must convert USD/GiB/month into USD/GiB/hour when you calculate the fee for the used storage space. For example, if the unit price of the space usage of a Capacity NAS file system in the China (Hangzhou) region is 0.06 USD/GiB/month, the unit price of the space usage per hour is 0.000083 USD/GiB/hour. The formula is: Unit price of space usage per hour= Unit price / (30 days × 24 hours). For more information, see Apsara File Storage NAS pricing.
- Storage package
You can purchase a storage package to deduct the resource usage fees of a General-purpose NAS file system. You can reserve resources and reduce costs by using storage packages. The following rules are applied when you use a storage package:
- A storage package does not limit the storage capacity of a file system. The maximum
storage capacity of a Capacity NAS file system is 1 PiB. The maximum storage capacity
of a Performance NAS file system is 10 PiB.
Note For example, you purchase a 100 GiB storage package for a Performance NAS file system named A. During a billing cycle, the used storage space of file system A is 180 GiB. The fee of 100 GiB is deducted by the storage package, and the fee of the remaining 80 GiB is calculated based on the pay-as-you-go billing method.
- Storage packages and General-purpose NAS have the following relationships:
- A General-purpose NAS file system can be attached to only one storage package at a time. When you delete a General-purpose NAS file system, the attached storage package is detached. You can attach the storage package to another General-purpose NAS file system. However, the new file system must be of the same type and reside in the same region as the file system that you delete.
- You can attach a storage package only to a file system whose storage type is the same as the storage package. For example, if you delete a Capacity NAS file system to which a storage package is attached, the detached storage package cannot be attached to a Performance NAS file system. If you delete a Performance NAS file system to which a storage package is attached, the detached storage package cannot be attached to a Capacity NAS file system.
- You can attach a storage package to an arbitrary file system. You do not need to be concerned about the protocol type that is used. The detached package can be attached to a file system that uses the Server Message Block (SMB) protocol. For example, this applies if you delete a file system to which a storage package is attached and the file system uses the Network File System (NFS) protocol.
- When a storage package expires or the used space exceeds the capacity of the storage package, you are billed based on the pay-as-you-go billing method. You are billed for the data stored in your NAS file systems. No fee is incurred when the space usage is 0 GiB. If you no longer use NAS, we recommend that you delete your file systems or delete all your data from these file systems.
- You can manually renew a storage package within the validity period of the storage package. You can also enable the auto-renewal feature. For more information, see Renew a storage package. You can upgrade a storage package based on your business requirements. For more information, see Upgrade a storage package.
- A storage package does not limit the storage capacity of a file system. The maximum
storage capacity of a Capacity NAS file system is 1 PiB. The maximum storage capacity
of a Performance NAS file system is 10 PiB.
Examples
Billing methods | Fee |
---|---|
Pay-as-you-go | Space usage fee = 1,024 GiB × 0.06 USD/GiB/month = USD 61.44 |
Storage package (500 GiB, 1 month) | Space usage fee = USD 23 + (1024 GiB - 500 GiB) × 0.06 USD/GiB/month = USD 54.44
In the preceding equation, USD 23 is the fee for the storage package (500 GiB, 1 month). |
Storage package (1 TiB, 1 month) | Space usage fee = USD 48
In the preceding equation, USD 48 is the fee for the storage package (1 TiB, 1 month). |
Billing methods | Fee |
---|---|
Pay-as-you-go | Space usage fee = 1,024 GiB × 0.3 USD/GiB/month = USD 307.2 |
Storage package (500 GiB, 1 month) | The fee of 500 GiB is deducted by the storage package, and the fee of the remaining
space usage is calculated based on the pay-as-you-go billing method.
Space usage fee = USD 133 + (1024 GiB - 500 GiB) × 0.3 USD/GiB/month = USD 290.2 In the preceding equation, USD 133 is the fee for the storage package (500 GiB, 1 month). |
Storage package (1 TiB, 1 month) | Space usage fee = USD 272
In the preceding equation, USD 272 is the fee for the storage package (1 TiB, 1 month). |