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.
Alibaba Cloud has released resource plans for File Storage NAS (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 deducts 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. When you renew the file system, you can select a duration 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 Expenses and Costs console.
Manually renew the file system
Log on to the NAS console.
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In the left-side navigation pane, choose . Find the target file system and click in the Actions column.
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On the Renew page, select a renewal duration. The system automatically displays the new expiration date.
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.
Follow the instructions to place an order. Complete the payment.
Disable auto-renewal for the file system
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Go to the Renewal page. On the Auto-renewal tab, find the target Extreme NAS.
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In the Actions column, click Nonrenewal. Follow the on-screen instructions.
You can also view Extreme NAS file systems that are not set for auto-renewal on the Nonrenewal upon Expiration tab.
Impact of expiration
When an Extreme NAS file system's subscription expires, its service stops. Your data is retained but becomes inaccessible. If you renew the subscription within 7 days after the service is stopped, the service is automatically restored. If you do not renew the subscription within this 7-day period, the file system is released and its data is permanently deleted.