Configuration Change Fee
Last updated: 2025-07-09 20:22:09
Applicable Scenarios
When your business load changes and you need to adjust instance configurations, you can flexibly modify configurations and adjust capacity through the console. The system will immediately update your resource configuration after fee settlement is completed.
Subscription Config-Upgrade
Pricing Rules
Instance upgrades follow the principle of paying the price difference based on the remaining duration. The calculation formula is as follows:
Upgrade fee = (New configuration price - Original configuration price) × Remaining duration × Applicable discount
Important Notes
- Billing duration: Calculated by whole hours, less than 1 hour will be charged according to pay-as-you-go standard
- Applicable discount: Matches current valid discount on official website based on remaining duration
- Expiration time: Upgrade does not affect resource expiration time
- Multiple renewal periods: For original configurations with multiple unrenewed periods, calculated as original order price × duration × applicable discount
Billing Example
Take a monthly cloud server as an example, with original configuration of 4 cores 8GB, 20 days remaining usage time, now upgrading to 8 cores 16GB:
Basic Information
- Original configuration fee: $28/month
- New configuration fee: $56/month
- Remaining duration: 20 days
- Applicable discount: 90%
Fee Calculation
- New configuration fee calculation: $56/month × (20 days remaining/31 days) × 90% = $32.52
- Original configuration fee calculation: $28/month × (20 days remaining/31 days) × 90% = $16.26
- Additional upgrade fee required: $32.52 - $16.26 = $16.26
Result Description
You need to pay $16.26 upgrade fee, and the instance will be immediately upgraded to 8 cores 16GB configuration.
Subscription Config-Downgrade
Pricing Rules
Instance downgrade refund calculation formula:
- Refund amount = Original configuration refund amount - New configuration purchase fee
- For original configuration refund amount details, refer to Refund Instructions
Important Notes
- When refund amount > 0, the corresponding fee will be refunded
- When refund amount ≤ 0, no refund will be given
Billing Examples
Case 1: Refund After Downgrade
Assume a monthly cloud server with monthly price of $10, purchased for 2 years, enjoying 80% annual discount.
Downgrade Scenario
Downgrade to $5/month after using for 2 months, with 22 months remaining.
Fee Calculation
- Original configuration refund calculation: Original total fee ($10/month × 24 months × 0.8 discount) - Used fee (2 months × $10) = $172
- New configuration purchase fee calculation: New monthly price ($5/month) × Remaining duration (22 months) × 0.8 discount = $88
- Final refund amount: Original configuration refund ($172) - New configuration purchase fee ($88) = $84
Result Description
Since refund amount > 0, system will refund $84 to your account.
Case 2: No Refund After Downgrade
Downgrade to $9/month after using for 23 months, with 1 month remaining.
Fee Calculation
- Original configuration refund calculation: $10/month × 24 months × 0.8 discount - (12 months × $10 × 0.8 discount + 11 months × $10) = -$14 < 0, refund amount is $0
- New configuration purchase fee: $9/month × 1 month = $9
- Refund amount: $0 - $9 = -$9
Since refund amount is less than or equal to 0, no refund will be given.
On-Demand Config-Change
Billing Rules
On-demand instance configuration changes adopt real-time billing with the following rules:
- Configuration Adjustment: After configuration change is successful, the system will immediately bill according to the new configuration price, whether upgrading or downgrading
- Billing Cycle: Billed by hour, with partial hours calculated by actual seconds used
- Fee Calculation: Fee = Configuration unit price × Actual usage duration
Important Notes
- Configuration changes take effect immediately
- No limit on number of changes, can be adjusted anytime as needed
On-Demand Capacity Adjustment
Supported Resource Types
Adjustable resource capacities for on-demand instances include:
- Cloud disk capacity (only supports expansion, cannot reduce capacity)
- Public network bandwidth specifications
Billing Rules
- Billing Method: Billed by hour, with partial hours calculated by exact seconds
- Fee Settlement: Original configuration fees calculated until change time, new configuration fees start from change time
- Billing Formula: Fee = Instance unit price × Adjusted resource capacity × Actual usage duration (seconds)
Usage Notes
- Resource adjustments take effect immediately
- Can be adjusted anytime as needed, no limit on number of adjustments
- Some resource types may have minimum or maximum capacity limits