An ApsaraDB dedicated cluster consists of multiple hosts such as ECS I2 and X-Dragon. You can run instances on these hosts.


ApsaraDB for MyBase allows you to manage database instances in batches. You can create multiple dedicated clusters in a region. Each dedicated cluster consists of multiple hosts. Each host supports multiple instances.

ApsaraDB for MyBase offers the following three cluster-level features:

  • Resource scheduling: You can configure an overcommitment ratio for a specific type of resources to maximize resource usage. Resources are categorized into the following types: CPU, memory, storage capacity, input/output operations per second (IOPS), and network traffic.
  • Host management: You can use resources of an ApsaraDB for MyBase cluster after you create hosts. You can add and replace hosts in a dedicated cluster.
  • Instance management: You can manage primary instances, secondary instances, read-only instances, and instances that are used to store logs. You can also use instance management features provided by MyBase for RDS.

Supported database engines, versions, and architectures

Note Other database engines may be supported in later versions.
Database engine Database version and architecture
RDS MySQL MySQL 8.0, High-availability Edition
MySQL 5.7, Enterprise Edition
MySQL 5.7, High-availability Edition
MySQL 5.6, High-availability Edition
RDS PostgreSQL PostgreSQL 12, High-availability Edition
PostgreSQL 11, High-availability Edition
RDS SQL Server SQL Server 2016 Enterprise Edition, High-availability Edition
SQL Server 2012 Enterprise Edition, High-availability Edition
SQL Server 2017 Standard Edition, High-availability Edition
SQL Server 2016 Standard Edition, High-availability Edition
SQL Server 2012 Standard Edition, High-availability Edition


You need to pay only for the hosts that you create and for the enhanced SSDs that you use. You do not need to pay for dedicated clusters, instances, memory, or local SSDs.


ApsaraDB for MyBase enables more flexible resource scheduling, more advanced enterprise-level databases, and more permissions than regular database services. For more information, see Benefits.

How to use dedicated clusters

For more information about how to create a dedicated cluster, see Quick start.