This topic describes the billable items, billing methods, pricing, and billing cycles for Cloud Parallel File Storage (CPFS) General-purpose Edition file systems.
Billable items
CPFS General-purpose Edition file systems have two types of billable items:
Basic fees: Storage capacity fees. These fees apply to most users.
Value-added fees: These fees include data flow bandwidth fees for using the Data flow feature and protocol service bandwidth fees for using the Protocol Service (the CPFS-NFS client) to access the file system.
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. The charges for these instances are billed through Elastic Compute Service (ECS). For more information, see Instance type billing.
If you use the data flow feature and enable the AutoUpdate feature, CPFS General-purpose Edition uses EventBridge to collect object modification events from the source OSS bucket. This process 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 more information about the pricing of billable items for CPFS General-purpose Edition, see CPFS Pricing.
Billing cycle
CPFS is billed hourly based on your 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.
Due to system latency, the bill that you view at 09:30 may be for the fees generated from 05:30 to 06:30.
Bills for Alibaba Cloud CPFS are generated with a delay of 3 to 4 hours.
Billing formula
CPFS fees are settled hourly. The formula is: Fee = Provisioned Capacity × Hourly Unit Price.
The unit price for storage usage 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. Therefore, to calculate your actual storage usage fees, you must 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).