When you change the specifications of an ApsaraDB RDS instance, billing adjusts based on your billing method: pay-as-you-go instances switch to the new rate immediately, while subscription instances generate a price difference that you pay or receive as a refund.
Pay-as-you-go
Pay-as-you-go instances are billed hourly. After a specification change takes effect, the instance is billed at the rate of the new specifications.
Subscription
Changing specifications on a subscription instance generates a price difference — either a charge or a refund, depending on whether you upgrade or downgrade.
Upgrade
Select Upgrade and pay the price difference upfront. The charge is calculated as follows:
Payment = (New monthly price / 30 / 24 × Remaining subscription duration) − (Original monthly price / 30 / 24 × Remaining subscription duration)
Example: The monthly price of the new configuration is CNY 14,400, and the old configuration is CNY 7,200. The remaining subscription period is 50 days. The fee you need to pay is (14,400 / 30 × 50) - (7,200 / 30 × 50) = CNY 12,000.
Downgrade
For more information about the refund amount for an immediate downgrade, see Downgrade refund rules.
Change specifications
To upgrade or downgrade the specifications of a subscription instance:
Go to the Instances page of the ApsaraDB RDS console.
In the top navigation bar, select the region where the instance resides, then click the instance ID.
In the Configuration Information section of the Basic Information page, click Change Specifications.
Select Upgrade or Downgrade.
Pricing
Instance pricing varies by region, instance type, and storage capacity. For current prices, see the ApsaraDB RDS buy page.
What's next
Change instance specifications for your database engine:
API reference
Operation | Description |
Changes the instance type and storage capacity of an instance. |