Billing of IA storage media

Billing items

Billing methods

• Pay-as-you-go
  Formula: Space usage fee = Usage fee of General-purpose NAS + Usage fee of IA storage medium + Traffic fee of IA storage medium= Maximum usage of a General-purpose NAS file system per hour × Unit price per hour + Maximum usage of an IA storage medium per hour × Unit price per hour + Amount of read traffic × Unit price per hour + Amount of write traffic × Unit price per hour

  Note

  • If the lifecycle management feature is enabled, the usage of General-purpose NAS in the preceding formula is the used storage space of the data that is not transitioned to an IA storage medium.
  • Read/write traffic of IA storage media supports only the pay-as-you-go billing method.
  • The unit of the space usage fee in the pricing of NAS is USD/GB/month. In the pay-as-you-go billing method, the fees are equal to the used storage space multiplied by the unit price per hour. You must convert the unit USD/GB/month to USD/GB/hour when you calculate the fee for the used storage space. For example, if the unit price of the Capacity NAS space usage in the China (Hangzhou) region is 0.06 USD/GB/month, the unit price of the space usage per hour is 0.000083 USD/GB/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 service fees of General-purpose NAS. You can reduce costs by using storage packages. The following rules apply when you use a storage package:

  • A storage package is used to first deduct the fees for the used storage space. Then, if the storage package still has a positive balance, the storage package is used to deduct the fees for the used space of an IA storage medium based on a specified coefficient.
    • The storage package is sufficient to deduct all of the fees for the usage of the IA storage medium if the following condition is met: (Capacity of the storage package - Usage of the General-purpose NAS file system) × Coefficient - Usage of the IA storage medium ≥ 0 GB.
    • The storage package is insufficient to deduct all of the fees for the usage of the IA storage medium if the following condition is met: (Capacity of the storage package - Usage of the General-purpose NAS file system) × Coefficient - Usage of the IA storage medium < 0 GB. The fees for the remaining used storage space are calculated based on the pay-as-you-go billing method.

      The coefficient in the preceding formulas varies depending on the type of a file system. For Performance NAS file systems, the coefficient is 12.333. For Capacity NAS file systems, the coefficient is 2.333.

  • A storage package does not limit the storage capacity of a file system. The maximum storage capacity of a Capacity NAS instance is 1 PB. The maximum storage capacity of a Performance NAS instance is 10 PB.
    Note For example, you purchase a 100 GB storage package for the Performance NAS file system named A. During a billing cycle, the used storage space of file system A is 180 GB. The fee of 100 GB is deducted by the storage package, and the fee of the remaining 80 GB 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 detached storage package to another General-purpose NAS file system. However, the file system must belong to the same type and reside in the same region as the file system that you delete.
    • A storage package is related to the storage type of a file system. 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.
    • A storage package is unrelated to the protocol type that is used by a file system. For example, if you delete a file system to which a storage package is attached and the file system uses the Network File System (NFS) protocol, the detached package can be attached to a file system that uses the Server Message Block (SMB) protocol.
  • When a storage package expires or the used space exceeds the capacity of the storage package, you are charged based on the pay-as-you-go billing method. You are charged for the data stored in your NAS file systems. No fee is incurred when the space usage is 0 GB. If you no longer need NAS, we recommend that you delete your file systems or delete all your data from NAS.
  • 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.

Examples