The Service-Level Agreement (SLA) for ApsaraDB RDS instances running High-availability Edition and Cluster Edition with multi-zone deployment increases to 99.995% or 99.997%, depending on the number of zones.
Effective date
June 19, 2025
Scope
This change applies to ApsaraDB RDS instances running High-availability Edition or Cluster Edition deployed across two or more zones. Single-zone instances and RDS Enterprise Edition instances are not affected.
Details
The SLA increases based on the number of deployment zones:
-
Two zones: SLA increases to 99.995%
-
Three or more zones: SLA increases to 99.997%
|
RDS instance |
Deployed zones |
Edition |
SLA before improvement |
SLA after improvement |
|
RDS for MySQL |
Two zones |
High-availability Edition and Cluster Edition |
Dedicated instance types: 99.99% General-purpose instance types: 99.95% |
99.995% |
|
Three or more zones |
Cluster Edition |
99.99% |
99.997% |
|
|
RDS for PostgreSQL |
Two zones |
High-availability Edition and Cluster Edition |
Dedicated instance types: 99.99% General-purpose instance types: 99.95% |
99.995% |
|
Three or more zones |
Cluster Edition |
None |
99.997% |
|
|
RDS for SQL Server |
Two zones |
High-availability Edition and Cluster Edition |
Dedicated instance types: 99.99% General-purpose instance types: 99.95% |
99.995% |
|
RDS for MariaDB |
Two zones |
High-availability Edition |
Dedicated instance types: 99.99% General-purpose instance types: 99.95% |
99.995% |
The SLA for the following instances remains unchanged:
-
Instances deployed in a single zone (Basic Edition, High-availability Edition, or Cluster Edition)
-
Instances running RDS Enterprise Edition