This topic provides an overview of RDS, including a disclaimer, terms, and concepts.


ApsaraDB for RDS offers stable, reliable, and scalable cloud database services. Based on Apsara Distributed File System and high-performance storage (SSD), ApsaraDB for RDS supports the following database engines: MySQL, SQL Server, PostgreSQL. ApsaraDB for RDS also provides solutions for disaster recovery, backup, database restoration, monitoring, and migration to simplify the database operations and maintenance. For more information about the benefits of ApsaraDB for RDS, see Benefits.

This document describes how to configure ApsaraDB for RDS through the ApsaraDB for RDS console to help you know more about its features and functions. You can also manage ApsaraDB for RDS through APIs and SDKs.

For further assistance, you can log on to the ApsaraDB for RDS console, click More in the top navigation bar, and choose Support > Open a new ticket. If your business is complex, you can purchase a support plan to obtain support from IM enterprise groups, technical account managers (TAMs), and service managers.

For more information about ApsaraDB for RDS, see Product Details.


Some product features or services described in this document may be unavailable in certain regions. See the actual commercial contracts for specific Terms and Conditions. This document serves as a reference guide for your use of Alibaba Cloud products and services. Alibaba Cloud makes every effort to provide relevant operational guidance based on existing technologies. However, Alibaba Cloud hereby states that it in no way guarantees the accuracy, integrity, applicability, and reliability of the content of this document, either explicitly or implicitly.


  • Instance: A database service process that takes up physical memory independently. You can set different memory size, disk space, and database type, where the memory size determines the performance of the instance. After the instance is created, you can change the configuration or delete the instance at any time.
  • Database: A database is a logical unit created in an instance. The name of each database under the same instance must be unique.
  • Region and zone: Each region is a separate geographic area. Each region has many isolated locations known as zones. The power supply and network of each zone are independent. For more information, see Alibaba Cloud Global Infrastructure.

General terms

Term Description
On-premise database Refers to the database deployed in the local server room or the database not on the ApsaraDB for RDS.

ApsaraDB RDS XX (XX represents one of the following database engines: MySQL, SQL Server, PostgreSQL.)

Indicates the ApsaraDB for RDS of a specific database engine. For example, ApsaraDB RDS MySQL means the database engine of the instance enabled on the RDS is MySQL.