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.
  • In the NAS pricing system, the unit of space usage fees is USD/GiB/month. However, 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 a Capacity NAS storage capacity in the China (Hangzhou) region is 0.06 USD/GiB/month, the unit price of the storage capacity per hour is 0.000083 USD/GiB/hour. The formula is: Unit price of storage capacity per hour = Unit price / (30 days × 24 hours).For more information, see Apsara File Storage NAS pricing.
• Purchase a storage package
  You can purchase a storage package to deduct the resource usage fees of a General-purpose NAS file system. You can reduce costs by using storage packages. The following rules are applied 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 GiB.
    • 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 GiB. 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 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.

Examples