Cloud Parallel File Storage (CPFS) General-purpose Edition file systems are billed based on billable items, billing methods, pricing, and billing cycles.
Billable items
CPFS General-purpose Edition file systems have two types of billable items.
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Basic fees: Storage capacity fees, which apply to most users.
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Value-added fees: Data flow bandwidth fees for the Data flow feature and protocol service bandwidth fees for the Protocol Service (the CPFS-NFS client).
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If you use the CPFS-POSIX client to access a file system, the system automatically creates three pay-as-you-go ECS instances for client management when you create a POSIX mount target. These instances are billed through Elastic Compute Service (ECS). For more information, see Instance type billing.
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If you use the data flow feature with AutoUpdate enabled, CPFS General-purpose Edition uses EventBridge to collect object modification events from the source OSS bucket, which incurs event fees. The event service is in public preview and is free of charge. For more information, see Billing of EventBridge.
For more information about billable items, see Billable items of CPFS.
Billing method
Only the pay-as-you-go billing method is supported.
Product pricing
For pricing details of CPFS General-purpose Edition billable items, see CPFS Pricing.
Billing cycle
CPFS is billed hourly based on provisioned capacity. A bill is generated 3 to 4 hours after a billing cycle ends, but the actual time may vary. For example, at 09:30, the system settles the fees for usage from 08:00 to 09:00.
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Due to system latency, the bill displayed at 09:30 may cover the fees generated from 05:30 to 06:30.
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Bills for Alibaba Cloud CPFS are generated with a delay of 3 to 4 hours.
Billing formula
CPFS fees are settled hourly using the formula: Fee = Provisioned Capacity × Hourly Unit Price.
The storage unit price in CPFS pricing is specified in USD/GiB/month, but pay-as-you-go fees are calculated using the formula: Provisioned Capacity × Hourly Unit Price. To calculate actual storage fees, convert the monthly unit price from USD/GiB/month to an hourly rate. For example, if the unit price for a 100 MB/s/TiB baseline is USD 0.1236/GiB/month, the hourly unit price is approximately USD 0.000172/GiB/hour (0.1236 ÷ 30 ÷ 24).