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TencentDB for SQL Server

Features and Differences

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Última atualização: 2026-07-30 17:20:55
This document introduces the feature overview and differences across editions of TencentDB for SQL Server.

Feature Overview and Differences by Edition

Note:
In the following table, "-" means not involved.
Module
Feature
Single-Node (Formerly Basic Edition)
Dual-Node (Formerly HA Edition and Cluster Edition)
Multi-Node
Version
-
2012 Enterprise
2014 Enterprise
2016 Enterprise
2017 Enterprise
2019 Enterprise
2022 Enterprise
2025 Enterprise
2012 Enterprise
2014 Enterprise
2016 Enterprise
2017 Enterprise
2019 Enterprise
2022 Enterprise
2025 Enterprise
2017 Enterprise
2019 Enterprise
2022 Enterprise
2025 Enterprise
Lifecycle
Instance creation
Supported
Supported
Supported
Instance restart
Supported
Supported
Supported
Automatic renewal
Supported
Supported
Supported
Billing mode change
Supported
Supported
Supported
Instance termination
Supported
Supported
Supported
Read-only instance creation
Not supported
Supported
Supported (enable the feature via the read-only capability of the secondary node.)
Specification adjustment
Supported
Supported
Supported
Disk scaling
Scale-out: Supported.
Scale-in: Not supported.
Local disk scaling: Supported.
Cloud disk scale-out: Supported.
Cloud disk scale-in: Not supported.
Scale-out: Supported.
Scale-in: Not supported.
Version upgrade
Supported
Supported
Supported
Architecture upgrade
Not supported
Supported
-
Instance attribute
View of instance list
Supported
Supported
Supported
View of instance details
Instance name modification
Instance remark modification
Instance tag settings
Maintenance time management
Project management
Service Availability
Highly available method
Compute node migration + disk snapshot
The SQL Server 2012/2014/2016 Enterprise edition uses the Mirror HA version.
SQL Server 2017/2019/2022/2025 Enterprise uses Always On HA.
Always On HA is used.
Cross-Availability Zone Disaster Recovery
Not supported
Supported
Supported
Intra-city disaster recovery
Not supported
Supported
Supported
Read-only instance removal
Not supported
Supported
-
Cross-AZ migration
Not supported
Supported
Supported
Backup and restoration
Full backup
Supported
Supported
Supported
Data Backup
Incremental backup
Log backup
Scheduled backup
Manual backup
Packaged backup
Single-database backup
Instance backup
Multi-database backup
Backup policy customization
Recover by backup set
Recover by time point
Recover by user backup set
Rollback to the current instance
Rollback to an existing instance (intra-region)
Rollback to an existing instance (cross-region)
Backup download
Perform backup tasks for a replica instance
Not supported
The SQL Server 2012/2014/2016 Enterprise edition is not supported.
The SQL Server 2017/2019/2022/2025 Enterprise edition is supported.
Not supported
Backup overview
Supported
Supported
Supported
COS object lock WORM mechanism
Supported
Supported
Supported
Database recovery mode modification
Supported
Not supported
Not supported
Monitoring and alarm
Resource monitoring
Supported
Supported
Supported
Engine monitoring
Real-time monitoring
Monitoring policy customization
Metric alarm
Event alarm
Account management
Account creation and deletion
Supported
Supported
Supported
Account CAM authentication
Password reset
Database permission setup
Table permission setup
Standard account
Privileged account
Designated account
Admin account
Supported
Not supported
Not supported
Database management
Table-level account authorization
Supported
Supported
Supported
DMC data management
Database creation
Database deletion
Database cloning
Database authorization
Change data capture (CDC)
Change tracking (CT)
Database shrink
Data security
Security group
Supported
Supported
Supported
Database auditing
Supported
Supported
Supported
Network encryption
Not supported
Not supported
Not supported
TDE encryption
Supported
Supported
Not supported
SSL encryption
Supported
Supported
Supported
Disk Encryption
Instances using cloud disks and with SQL Server 2019/2022/2025 Enterprise edition are supported.
Instances using cloud disks and with SQL Server 2019/2022/2025 Enterprise edition are supported.
Instances using cloud disks and with SQL Server 2019/2022/2025 Enterprise edition are supported.
Data channel
Data sync
Not supported
Not supported
Not supported
Homogeneous data migration
Supported
Supported
Supported
Heterogeneous data migration
Not supported
Not supported
Not supported
Publishing/subscription
Supported
Not supported
Log management
Error logs
Not supported
Not supported
Not supported
Slow logs
Supported
Supported
Supported
Run logs
Not supported
Not supported
Not supported
Blocking and deadlock events
SQL Server 2012/2014/2016/2017/2019/2022/2025 Enterprise editions are supported.
SQL Server 2012/2014/2016/2017/2019/2022/2025 Enterprise editions are supported.
Supported
Parameter management
Parameter update
Supported
Supported
Supported
Parameter history
Parameter template
Not supported
Not supported
Not supported
Performance optimization
Expert service
Supported
Supported
Supported
Resource analysis
Not supported
Not supported
Not supported
Engine analysis
Networking
VPC
Supported
Supported
Supported
Public network address
Supported
Supported
Supported

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