This document compares the features supported by different types of TencentDB for MySQL instances, allowing you to learn more about the capabilities of each type and purchase instances that best suit your needs.
Feature | Two-Node Instance | Three-Node Instance | Single-Node Instance | |
---|---|---|---|---|
Resource isolation policy | General | General | General | Basic |
Database engine version | MySQL 5.7 | |||
Node quantity | 2 | 3 | 1 | 1 |
Memory/Disk | Up to 690 GB/6 TB | Up to 690 GB/6 TB | Up to 690 GB/6 TB | Up to 8 GB/1 TB |
Upgrading database engine version | Supported (MySQL 5.5 and 5.6 only) | Supported | Supported | Supported |
Upgrading to three-node instances | Supported | - | - | - |
Read-only replicas | Supported (only in MySQL 5.6, 5.7, and 8.0) | Supported | Supported | - |
Managing accounts | Supported | Supported | - | Supported |
Setting parameters | Supported | Supported | - | Supported |
Backup | Supported | Supported | - | - |
Rollback | Supported | Supported | - | - |
Data migration | Supported | Supported | Supported | - |
Importing SQL files | Supported | Supported | - | - |
Security groups | Supported | Supported | Supported | - |
Monitoring and alarms | Supported | Supported | Supported | Supported |
Operation logs | Supported | Supported | Supported | Supported |
Note:"-" in the table above means "unsupported".
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