Overview of Multi-AZ Deployment
Last updated: 2025-11-27 17:00:27
TDSQL-C for MySQL offers both preset resources and Serverless cluster types, all supporting multi-availability zone deployment. Compared to single availability zone deployment, multi-availability zone deployment offers higher disaster recovery capabilities, ensuring database protection against instance failures or availability zone interrupts, and providing resilience against data center level failures. Multi-availability zone deployment enhances database instances with high availability and failover support. A multi-availability zone configuration involves combining multiple single availability zones within the same region into a physical zone. This article introduces multi-availability zone deployment for Serverless clusters. For information on multi-availability zone deployment with preset resources, please see Overview of Multi-availability zone Deployment.
Prerequisites
The cluster region has at least two AZs.
The target AZ has sufficient computing resources.
Database version requirements:
Database version 5.7 with kernel minor version 2.0.15 or later.
Database version 8.0 with kernel minor version 3.0.1 or later.
Supported Regions and AZs
Currently, this feature is in beta test and only supports the following regions and AZs.
This feature will gradually support more regions and AZs.
If your business requires it, you can Submit a Ticket to request deployment in other Regions and AZs.
Supported Region | Supported Primary AZ | Supported Secondary AZ |
Beijing | Beijing Zone 3 | Beijing Zone 5 |
| Beijing Zone 5 | Beijing Zone 7 |
| Beijing Zone 6 | Beijing Zone 7 |
| | Beijing Zone 8 |
| Beijing Zone 7 | Beijing Zone 5 |
Shanghai | Shanghai Zone 2 | Shanghai Zone 4 |
| Shanghai Zone 4 | Shanghai Zone 2 |
| Shanghai Zone 5 | Shanghai Zone 4 |
Guangzhou | Guangzhou Zone 4 | Guangzhou Zone 6 |
| Guangzhou Zone 6 | Guangzhou Zone 4 |
| | Guangzhou Zone 7 |
| Guangzhou Zone 7 | Guangzhou Zone 4 |
Hong Kong (China) | Hong Kong (China) Zone 2 | Hong Kong (China) Zone 3 |
Singapore | Singapore Zone 3 | Singapore Zone 4 |
| Singapore Zone 4 | Singapore Zone 3 |
Silicon Valley | Silicon Valley Zone 2 | Silicon Valley Zone 1 |
Virginia | Virginia Zone 1 | Virginia Zone 2 |
| Virginia Zone 2 | Virginia Zone 1 |
Tokyo | Tokyo Zone 1 | Tokyo Zone 2 |
| Tokyo Zone 2 | Tokyo Zone 1 |
Nanjing | Nanjing Zone 1 | Nanjing Zone 2 |
Jakarta | Jakarta Zone 2 | Jakarta Zone 1 |
Chengdu | Chengdu Zone 1 | Multi-AZ deployment is not supported |
Seoul | Seoul Zone 2 | Multi-AZ deployment is not supported |
Frankfurt | Frankfurt Zone 2 | Frankfurt Zone 1 |
São Paulo | São Paulo Zone 1 | Multi-AZ deployment is not supported |
Bangkok | Bangkok Zone 2 | Multi-AZ deployment is not supported |
Multi-AZ Deployment Fee Description
There are no additional fees for the Multi-AZ Deployment feature for the time being.
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