This topic describes the billing items and billing methods of an Extreme NAS file system. This topic also provides a billing example.

Billing items

Billing item Description
Capacity Fees are calculated based on the capacity that you purchase. The billing cycle is one hour.

Billing methods

Note When you create an Extreme NAS file system, you must select pay-as-you-go or subscription as the billing method. The billing method cannot be changed after the Extreme NAS file system is created.
  • Pay-as-you-go

    Formula: Storage capacity fee = Capacity of the Extreme NAS file system per hour × Unit price per hour

    In the preceding formula, the capacity of the Extreme NAS file system is the capacity that you purchased. The storage capacity fee is calculated by the hour and based on the purchased capacity instead of the used storage space per hour.
    Note 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 storage capacity multiplied by the unit price per hour. You must convert USD/GiB/month to USD/GiB/hour when you calculate the storage capacity fee per hour. For example, if the unit price of the Extreme NAS storage capacity in the China (Hangzhou) region is 0.27864 USD/GiB/month, the unit price of the storage capacity per hour is 0.000387 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.
  • Subscription

    The storage capacity that you purchased is the maximum storage capacity of the Extreme NAS file system. If the size of the data that you want to write to the file system exceeds the capacity, you must scale up the capacity. Otherwise, the extra data cannot be written to the file system. For more information, see Scale up an Extreme NAS file system.

    When an Extreme NAS file system expires, it is automatically stopped. The data stored in the file system will be retained for a specified period of time but cannot be accessed. If you renew the file system, it is automatically started. For more information, see Overdue payments.

Renew an Extreme NAS file system

If you create an Extreme NAS file system based on the subscription billing method, you can renew the file system before it expires. You can also enable the auto-renewal feature when you create an Extreme NAS file system. When you perform a manual renewal, you can select an order duration to specify the validity period for the file system that you want to renew.
  • Perform a manual renewal
    1. Log on to the Apsara File Storage NAS console.
    2. Choose File System > File System List, find the file system to which the storage package is attached, and then click More > Renewal Fee.
    3. On the Renew page, select a duration. The expiration date appears.

      The minimum duration is one month and the maximum duration is three years. You can renew the Extreme NAS file system again after the expiration date.

    4. Confirm your settings, select Extreme NAS_International Site (Subscription) Terms of Service, click Buy Now, and then complete the payment as prompted.
  • Enable the auto-renewal feature

    When you create an Extreme NAS file system based on the subscription billing method, select a duration in the Duration section, and then select Auto-renewal.

    Note The auto-renewal cycle is one month.
  • Disable the auto-renewal feature
    1. Log on to the Billing Management console.
    2. On the Auto tab, find the Extreme NAS file system whose auto-renewal feature you want to disable.
    3. In the Actions column, click Nonrenewal.
    4. In the Set as Nonrenewal dialog box, click OK.

      On the Nonrenewal tab, you can view the Extreme NAS file system whose auto-renewal feature is disabled.

Examples

In this example, Mr. Wang has created an Extreme NAS file system in the China (Hangzhou) region. The average storage capacity per hour in July of 2020 was 1 TiB. The following table lists the monthly fees that were incurred by the file system based on the pay-as-you-go and subscription billing methods.
Billing methods Fee
Pay-as-you-go Storage capacity fee = 1,000 GiB × 0.27864 USD/GiB/month = USD 278.64
Subscription Storage capacity fee = USD 250

In the preceding formula, USD 250 is the fee for the Extreme NAS file system (1 TiB, 1 month) based on the subscription billing method.