Subscription is a billing method that allows you to pay in advance for the use of resources. The subscription billing method can be used to offset the storage usage fees of only existing subscription Extreme NAS file systems.

Important Alibaba Cloud has released resource plans for Apsara File Storage NAS. You can no longer purchase subscription Extreme NAS file systems. However, you can still renew and upgrade existing Extreme NAS file systems. You can use the subscription billing method to offset the storage usage fees of only the associated Extreme NAS file system. In contrast, you can use multiple resource plans to offset the storage usage fees of multiple Extreme NAS file systems.

Offset rules

  • After you create a subscription Extreme NAS file system, NAS offsets the subscription quota based on the maximum capacity of your file system.
  • 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 file system. Otherwise, the excess data cannot be written to the file system. For more information, see Scale up an Extreme NAS file system

Renewal

If you have a subscription Extreme NAS file system, you can renew the file system before it expires. If you renew the file system, you can select a duration to specify the validity period for the file system. If you enabled the auto-renewal feature when you created your subscription Extreme NAS file system, you can disable the feature in the User Center.

Manually renew the file system

  1. Log on to the NAS console.
  2. In the left-side navigation pane, choose File System > File System List. Find the file system and choose 1 > Renewal Fee in the Actions column.
  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 before it expires.

  4. Confirm your settings, select Extreme NAS Terms of Service, click Buy Now, and then complete the payment as prompted.

Disable auto-renewal for the file system

  1. Log on to the Bill Management console.
  2. On the Auto tab, find the Extreme NAS file system for which you want to disable auto-renewal.
  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 for which auto-renewal is disabled.

Impact of expiration

If a subscription Extreme NAS file system expires, it is automatically stopped 15 days later. The data is temporarily retained but is inaccessible. If you renew the file system within 15 days after it is stopped, the file system is automatically resumed. If you do not renew the file system within 15 days after it is stopped, the file system will be released and data cannot be retrieved.