Yearly/Monthly Billing

Application Scenarios

If you want to ensure resource stability over a certain period of time, yearly/monthly billing is a good choice for the following types of workloads:

Long-term workloads with stable resource requirements, such as official websites, online malls, and blogs.
Long-term projects, such as scientific research projects and large-scale events.
Workloads with predictable traffic bursts, for example, e-commerce promotions or festivals.
Workloads with high data security requirements

Billed Items

**Table 1** SFS Capacity-Oriented billing model
Billed Item	Description
Storage space	Billed based on the used capacity and usage period of the file system

**Table 2** General Purpose File System billing model
Billed Item	Billing Factor	Description
Standard storage	Storage space	Billed based on the used capacity and usage period of the general purpose file system
Infrequent access storage	Storage space	Billed based on the used capacity and usage period of the general purpose file system
	Write traffic	Billed based on the volume of the write traffic
	Read traffic	Billed based on the volume of the read traffic

**Table 3** SFS Turbo billing model
Billed Item	Billing Factor
SFS Turbo file system	Purchased capacity

Billed Usage Period

A yearly/monthly SFS file system is billed for the purchased duration. The billing starts from when you activated or renewed the subscription, and ends at 23:59:59 of the expiry date.

For example, if you purchased a one-month SFS file system on March 8, 2023, 15:50:04, the billed usage period was from March 8, 2023, 15:50:04 to April 8, 2023, 23:59:59.

Billing Examples

Suppose you purchased a one-month subscription of an SFS Turbo General file system (Standard, 500 GiB) on March 8, 2023, 15:50:04, and renewed the subscription for one more month before the initial subscription expired. The following usage periods would be billed:

March 8, 2023, 15:50:04 to April 8, 2023, 23:59:59
April 8, 2023, 23:59:59 to May 8, 2023, 23:59:59

You would be billed for both usage periods. In each period, the file system would be billed as follows:

File system price = File system unit price x Capacity x Purchased duration

Price Change After Specification Change

If the specifications of a yearly/monthly SFS file system no longer meet your needs, you can change the specifications, such as resize the file system on the SFS console. The system will recalculate the price and either bill or refund you the difference.

If you upgrade your file system specifications, you need to pay the difference in price.

Price difference for the specification upgrade = Price for the new specifications × Remaining period - Price for the original specifications × Remaining period

The remaining period is the remaining days of each calendar month divided by the maximum number of days in each calendar month.

For more information, see Pricing of a Changed Specification.

Impact of Expiration

Figure 1 shows the statuses a yearly/monthly SFS file system can go through throughout its lifecycle. After an SFS file system is purchased, it enters the valid period and works normally during this period. If the file system is not renewed after it expires, before being deleted, it first enters a grace period and then a retention period.

Figure 1 Lifecycle of a yearly/monthly SFS file system

Expiration Reminder

The system will send you a reminder (by email, SMS, or in-app message) 7 days before a yearly/monthly SFS file system expires to remind you to renew the subscription.

Impact of Expiration

If your yearly/monthly SFS file system is not renewed after it expires, it changes to the Expired state and enters a grace period. During the grace period, you can access the file system, but cannot perform certain operations.

If the yearly/monthly SFS file system is not renewed after the grace period ends, its status turns to Frozen and it enters a retention period. You cannot perform any operations on the file system while it is in the retention period.

If the yearly/monthly SFS file system is not renewed by the time the retention period ends, the file system will be released and data cannot be restored.