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File Storage NAS:Billing of Extreme NAS file systems

Last Updated:Sep 11, 2026

After you create an Extreme NAS file system, the default billing method is pay-as-you-go. You can also purchase Extreme NAS resource plans to offset fees for provisioned capacity. This topic describes the billing rules and methods for Extreme NAS file systems.

Billable items of Extreme NAS file systems

Note

The following table describes the offset factor that applies when you use a resource plan in the Chinese mainland to offset the provisioned capacity fees of an Extreme NAS file system. To view the offset factors for other regions, use the calculator.

Billable item

Billing rule

Description

Billing method

Provisioned capacity of an Extreme NAS file system

You are charged based on the maximum hourly provisioned capacity and the storage duration.

The provisioned capacity of an Extreme NAS file system is selected on the buy page. You are charged for the file system based on the provisioned capacity on an hourly basis. You are not charged based on the amount of data written to the file system.

  • Pay-as-you-go: Capacity fee = Provisioned capacity of the Extreme NAS file system × Unit price per hour.

  • Resource plan: You can use the base capacity of your NAS resource plan to offset the provisioned capacity of your Extreme NAS file system.

    • Standard Extreme NAS file system: You can use 1 GiB of base capacity in your NAS resource plan to offset the fee for 1 GiB of provisioned capacity for a standard Extreme NAS file system.

    • Advanced Extreme NAS file system: You can use 1 GiB of base capacity in your NAS resource plan to offset the fee for 1 GiB of provisioned capacity for an advanced Extreme NAS file system.

  • Subscription (no longer available for purchase)

    Note
    • Alibaba Cloud provides Extreme NAS resource plans. You can no longer purchase subscription Extreme NAS file systems. However, you can still renew and scale out existing subscription Extreme NAS file systems.

    • You cannot change the billing method of an Extreme NAS file system from subscription to pay-as-you-go. You cannot use resource plans to offset the provisioned capacity fees of subscription Extreme NAS file systems.

Billing examples

Note

The following billing examples are for reference only. The prices on the File Storage NAS Pricing page take precedence.

A user creates an Extreme NAS file system in the China (Hangzhou) region. Assume the provisioned capacity is 1 TiB per hour in July 2020. The following table describes the monthly fees based on the pay-as-you-go method and a one-month Extreme NAS resource plan with 1 TiB of base capacity.

Billing method

Fee

Pay-as-you-go

1,024 GiB × USD 0.3/GiB/month = USD 307.2

Extreme NAS resource plan

USD 252.8256 (One-month Extreme NAS resource plan with 1 TiB of base capacity)

References