Alibaba Cloud plans to end the public preview of the I/O performance burst feature of Premium ESSDs used by ApsaraDB RDS instances. After the public preview, this feature is generally available.
General available date
September 16, 2025 (Singapore Time)
Billing rules
ApsaraDB RDS provides a free quota for the I/O performance burst feature. Usage that exceeds the free quota is charged on a pay-as-you-go basis. For more information, see IO performance burst billing.
For existing instances with the I/O performance burst feature enabled:
Free quota retained: Usage within the free quota remains free of charge.
Pay-as-you-go for excess usage: Usage that exceeds the free quota is billed on a pay-as-you-go basis.
If you do not want to be charged for the I/O performance burst feature, you can manually disable the feature.
If your services have large traffic fluctuations or frequent peaks, enable the I/O performance burst feature for Premium ESSDs. This feature allows the IOPS to exceed its maximum limit for higher I/O capacity to handle sudden traffic spikes.
Impact
Existing instances with the I/O performance burst feature enabled: This feature is not automatically disabled. Keep it enabled or disable it based on your requirements.
New instances: This feature is disabled by default. You can manually enable it.