Billing Examples

Billing Scenario

A user purchased a pay-per-use ECS at 15:30:00 on March 18, 2023. The ECS configuration is as follows:

Specifications: c7n.large.2 2 vCPUs | 4 GiB
Image: CentOS 7.9 64bit
System disk: General Purpose SSD | 40 GiB
Data disk: General Purpose SSD | 100 GiB
Public network bandwidth: 6 Mbit/s

After a period of time, the user found that the current ECS specifications no longer met service requirements and updated the specifications to c7.xlarge.2 (4 vCPUs, 8 GiB memory) at 09:00:00 on March 20, 2023. Since the user wanted to use the ECS long term, the user then changed the ECS to yearly/monthly billing with a one-month duration at 10:30:00 on the same day. So how much will the user be billed for this ECS in March and April?

Billing Analysis

The total price of this ECS involves both pay-per-use and yearly/monthly usage:

Pay-per-use usage: March 18, 2023, 15:30:00 to March 20, 2023, 10:30:00
Yearly/monthly usage: March 20, 2023, 10:30:00 to April 20, 2023, 23:59:59

Pay-per-use

From March 18, 2023, 15:30:00 to March 20, 2023, 09:00:00, a c7n.large.2 flavor ECS was used for 41.5 hours, so the price would be calculated as follows.

Figure 1 Total price for a pay-per-use ECS 1

From March 20, 2023, 09:00:00 to March 20, 2023, 10:30:00, a c7n.xlarge.2 flavor ECS was used for 1.5 hours, so the price would be calculated as follows.

Figure 2 Total price for a pay-per-use ECS 2

Yearly/Monthly

From March 20, 2023, 10:30:00 to April 20, 2023, 23:59:59, an ECS purchased using yearly/monthly billing was used for one month, so the price would be calculated as follows.

Figure 3 Total price for a yearly/monthly ECS