Currently, RDS instances are divided into three series: Basic Edition, High-availability Edition and Finance Edition.  Different series support different engine types and instance types. For more information, see Instance type overview.
Currently the Finance Edition is applicable only to regions in China.

Brief introductions

Series Introduction Use cases
Basic Edition It uses the storage-computing-isolated architecture and a single computing node, realizing super high cost effectiveness.
  • Personal learning
  • Micro websites
  • Development and testing environments for small- and medium-sized enterprises
High-availability Edition It uses the classic high-availability architecture with one master node and one slave node. The ephemeral SSD storage provides the best and balanced performance.
  • Production databases of large-sized enterprises
  • Applications for Internet, Internet of things (IoT), retail e-commerce sales, logistics, gaming, and other industries

Feature differences

Feature Basic Edition High-availability Edition
  • MySQL 5.7
  • SQL Server 2012 Web, Enterprise
  • SQL Server 2016 Web
  • MySQL 5.5/5.6/5.7
  • SQL Server 2008 R2 Enterprise
  • SQL Server 2012 Standard, Enterprise
  • SQL Server 2016 Standard, Enterprise
  • PostgreSQL 9.4
  • PPAS 9.3
Number of nodes 1 2
Maximum configuration 32-core 128 GB/2 TB 60-core 470 GB/3 TB
Set monitoring and alarms Supported Supported
IP whitelist Supported Supported
Backup and recovery Supported Supported
Parameter settings  Supported Supported
SSL and TDE Not supported Supported (Currently MySQL 5.7 does not support TDE)
Log management Not supported Supported
Performance optimization Not supported Supported
Read-only instance (Additional instances required) Not supported Supported only by MySQL 5.6/5.7
Read/write splitting Not supported Supported only by MySQL 5.6
Built-in read/write splitting Not supported Not supported
SQL audit Not supported Supported (Additional payment required)
High-frequency monitoring Not supported Supported (Additional payment required)