After you create an Extreme NAS file system, you are billed based on the pay-as-you-go billing method by default. You can also purchase Extreme NAS resource plans to offset the storage usage fees of Extreme NAS file systems. This topic describes the billing methods of Extreme NAS file systems.

Billable items of Extreme NAS file systems

Billable item Billing rule Description Billing method
Capacity of Extreme NAS file system You are charged based on the storage duration and storage capacity of the file system on an hourly basis. The storage capacity of an Extreme NAS file system is the capacity that you selected on the buy page. You are charged for the file system based on the purchased capacity on an hourly basis. You are not charged based on the amount of data written to the file system.
  • Pay-as-you-go: Storage usage fee = Capacity of the Extreme NAS file system × Unit price per hour.
  • On the buy page of NAS resource plans, select Extreme NAS Resource Plan.
    • Standard Extreme NAS file system: You can use 1 GiB of base capacity in your Extreme NAS resource plan to offset the fee for 1 GiB of storage capacity that is purchased for a standard Extreme NAS file system.
    • Advanced Extreme NAS file system: You can use 1 GiB of base capacity in your Extreme NAS resource plan to offset the fee for 1 GiB of storage capacity that is purchased for an advanced Extreme NAS file system.
  • Subscription (no longer available for purchases)
    Note
    • Alibaba Cloud provides Extreme NAS resource plans. You can no longer purchase subscription Extreme NAS file systems. However, you can still renew and upgrade existing subscription Extreme NAS file systems.
    • You cannot change the billing method of Extreme NAS file systems from subscription to pay-as-you-go. You cannot use resource plans to offset the storage usage fees of subscription Extreme NAS file systems.

Billing example

Note The following billing example is for reference only. The prices displayed on the Apsara File Storage NAS Pricing page shall prevail.
Mr. Wang has created an Extreme NAS file system in the China (Hangzhou) region. The storage capacity per hour in July 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 billing method and a resource plan (1 TiB, one month).
Billing method Fee
Pay-as-you-go 1024 GiB × USD 0.3/GiB/month = USD 307.2
Extreme NAS resource plan USD 252.8256 (The Extreme NAS resource plan has a base capacity of 1 TiB and a duration of one month)

References