- Release Notes and Announcements
- Release Notes
- Announcements
- Announcement on Changing External Network Links
- Interface Authentication Upgrade Announcement
- Maintenance Time Change from Local Time to Beijing Time
- Account Type and Permission Changes
- Product Architecture Name Change
- Disk Storage Space Composition Change
- Ending Support for Classic Network [2022.12.31]
- Backup Billing Start [2022.07.10]
- Ending Sale for Basic Edition 1-Core Specification [2022.03.07]
- User Guide
- Product Introduction
- Purchase Guide
- Getting Started
- Operation Guide
- Constraints and Limits
- Usage Specifications and Suggestions
- Maintaining Instance
- Renaming Instance
- Setting Instance Remarks
- Setting Instance Tag
- Setting Instance Project
- Modify Instance-level Character Set Collation
- Modify System Time Zone
- Setting Instance Maintenance Information
- Multi-AZ Disaster Recovery
- Restarting Instance
- Terminating Instance
- Migrating Across AZs
- Manual Primary-Secondary Switching
- Recycle Bin
- Adjusting Instance Configuration
- Read-Only Instance
- Network and Security
- Account Management
- Database Management
- Data Security
- Parameter Configuration
- Monitoring and Alarms
- Backup and Restoration
- Log Management
- Publish-Subscribe
- SSIS
- Data Migration (New)
- Data Migration (Legacy)
- Best Practice
- API Documentation
- History
- Introduction
- API Category
- Making API Requests
- Instance Management APIs
- CreateCloudDBInstances
- CreateCloudReadOnlyDBInstances
- ModifyInstanceEncryptAttributes
- UpgradeDBInstance
- RollbackInstance
- RestoreInstance
- RestartDBInstance
- ResetAccountPassword
- ModifyDBRemark
- ModifyDBName
- ModifyDBInstanceProject
- ModifyDBInstanceName
- ModifyAccountPrivilege
- InquiryPriceUpgradeDBInstance
- InquiryPriceCreateDBInstances
- DescribeZones
- DescribeRollbackTime
- DescribeRegions
- DescribeProductConfig
- DescribeFlowStatus
- DescribeDBs
- DescribeDBInstances
- DescribeAccounts
- DeleteDB
- DeleteAccount
- CreateDBInstances
- CreateDB
- CreateAccount
- TerminateDBInstance
- RecycleDBInstance
- CloneDB
- DescribeDBCharsets
- ModifyDatabaseMdf
- ModifyDatabaseCT
- ModifyDatabaseCDC
- DescribeDBsNormal
- ModifyInstanceParam
- DescribeInstanceParams
- DescribeInstanceParamRecords
- OpenInterCommunication
- DescribeDBInstanceInter
- DescribeBusinessIntelligenceFile
- DeleteBusinessIntelligenceFile
- CreateBusinessIntelligenceFile
- CreateBusinessDBInstances
- CloseInterCommunication
- Network Management APIs
- Backup APIs
- RunMigration
- ModifyMigration
- DescribeMigrations
- DescribeMigrationDetail
- DescribeBackups
- DeleteMigration
- CreateMigration
- CreateBackup
- ModifyBackupStrategy
- StartIncrementalMigration
- StartBackupMigration
- ModifyIncrementalMigration
- ModifyBackupMigration
- DescribeUploadBackupInfo
- DescribeIncrementalMigration
- DescribeBackupUploadSize
- DescribeBackupMigration
- DescribeBackupCommand
- DeleteIncrementalMigration
- DeleteBackupMigration
- CreateIncrementalMigration
- CreateBackupMigration
- DescribeBackupFiles
- Extended Event APIs
- Database APIs
- Other APIs
- Data Types
- Error Codes
- FAQs
- Overview
- Model Selection
- Pricing and Selection
- Connection and Network
- Account and Permission
- Backup and Rollback
- Data Migration
- Publish/Subscribe
- Read-Only Instance
- Version and Architecture Upgrade
- Disk Space and Specification Adjustment
- Monitoring and Alarms
- Log
- Parameter Modification
- Features
- Performance/Space/Memory
- Service Agreement
- Performance Evaluation
- Glossary
- Contact Us
- Release Notes and Announcements
- Release Notes
- Announcements
- Announcement on Changing External Network Links
- Interface Authentication Upgrade Announcement
- Maintenance Time Change from Local Time to Beijing Time
- Account Type and Permission Changes
- Product Architecture Name Change
- Disk Storage Space Composition Change
- Ending Support for Classic Network [2022.12.31]
- Backup Billing Start [2022.07.10]
- Ending Sale for Basic Edition 1-Core Specification [2022.03.07]
- User Guide
- Product Introduction
- Purchase Guide
- Getting Started
- Operation Guide
- Constraints and Limits
- Usage Specifications and Suggestions
- Maintaining Instance
- Renaming Instance
- Setting Instance Remarks
- Setting Instance Tag
- Setting Instance Project
- Modify Instance-level Character Set Collation
- Modify System Time Zone
- Setting Instance Maintenance Information
- Multi-AZ Disaster Recovery
- Restarting Instance
- Terminating Instance
- Migrating Across AZs
- Manual Primary-Secondary Switching
- Recycle Bin
- Adjusting Instance Configuration
- Read-Only Instance
- Network and Security
- Account Management
- Database Management
- Data Security
- Parameter Configuration
- Monitoring and Alarms
- Backup and Restoration
- Log Management
- Publish-Subscribe
- SSIS
- Data Migration (New)
- Data Migration (Legacy)
- Best Practice
- API Documentation
- History
- Introduction
- API Category
- Making API Requests
- Instance Management APIs
- CreateCloudDBInstances
- CreateCloudReadOnlyDBInstances
- ModifyInstanceEncryptAttributes
- UpgradeDBInstance
- RollbackInstance
- RestoreInstance
- RestartDBInstance
- ResetAccountPassword
- ModifyDBRemark
- ModifyDBName
- ModifyDBInstanceProject
- ModifyDBInstanceName
- ModifyAccountPrivilege
- InquiryPriceUpgradeDBInstance
- InquiryPriceCreateDBInstances
- DescribeZones
- DescribeRollbackTime
- DescribeRegions
- DescribeProductConfig
- DescribeFlowStatus
- DescribeDBs
- DescribeDBInstances
- DescribeAccounts
- DeleteDB
- DeleteAccount
- CreateDBInstances
- CreateDB
- CreateAccount
- TerminateDBInstance
- RecycleDBInstance
- CloneDB
- DescribeDBCharsets
- ModifyDatabaseMdf
- ModifyDatabaseCT
- ModifyDatabaseCDC
- DescribeDBsNormal
- ModifyInstanceParam
- DescribeInstanceParams
- DescribeInstanceParamRecords
- OpenInterCommunication
- DescribeDBInstanceInter
- DescribeBusinessIntelligenceFile
- DeleteBusinessIntelligenceFile
- CreateBusinessIntelligenceFile
- CreateBusinessDBInstances
- CloseInterCommunication
- Network Management APIs
- Backup APIs
- RunMigration
- ModifyMigration
- DescribeMigrations
- DescribeMigrationDetail
- DescribeBackups
- DeleteMigration
- CreateMigration
- CreateBackup
- ModifyBackupStrategy
- StartIncrementalMigration
- StartBackupMigration
- ModifyIncrementalMigration
- ModifyBackupMigration
- DescribeUploadBackupInfo
- DescribeIncrementalMigration
- DescribeBackupUploadSize
- DescribeBackupMigration
- DescribeBackupCommand
- DeleteIncrementalMigration
- DeleteBackupMigration
- CreateIncrementalMigration
- CreateBackupMigration
- DescribeBackupFiles
- Extended Event APIs
- Database APIs
- Other APIs
- Data Types
- Error Codes
- FAQs
- Overview
- Model Selection
- Pricing and Selection
- Connection and Network
- Account and Permission
- Backup and Rollback
- Data Migration
- Publish/Subscribe
- Read-Only Instance
- Version and Architecture Upgrade
- Disk Space and Specification Adjustment
- Monitoring and Alarms
- Log
- Parameter Modification
- Features
- Performance/Space/Memory
- Service Agreement
- Performance Evaluation
- Glossary
- Contact Us
Adjusting Instance Architecture
Last updated: 2024-01-18 17:20:33
This document describes how to adjust the instance architecture in the TencentDB for SQL Server console.
Architecture background
TencentDB for SQL Server supports the following architectures:
Type | Description |
Single-node (formerly Basic Edition) | (1) It is deployed on a single node and based on premium cloud disks, with computing and storage separated. (2) It offers extremely high cost-effectiveness. |
Two-node (formerly High Availability/Cluster Edition) 2008 R2/2012/2014/2016 Enterprise | (1) It consists of one primary database and one mirror database deployed across racks/AZs. (2) Each database corresponds to a monitoring agent that monitors the database through heartbeat in real time. |
Two-node (formerly High Availability/Cluster Edition) 2017/2019 Enterprise | (1) It adopts the Always On cluster deployment architecture, including one primary and one replica deployed across racks/AZs by default. (2) Each database corresponds to a monitoring agent that monitors the database through heartbeat in real time. |
Prerequisites
You can adjust the configuration of a TencentDB for SQL Server instance and its associated instances only when they are in running status and are not executing any tasks.
Notes
Currently, the architecture cannot be downgraded back after an upgrade.
Impact of configuration adjustment
Data migration will be involved during the instance configuration adjustment, and the larger the data volume, the longer the data migration time. Access to the instance will not be affected during this period.
A switch will be performed after migration is completed, which causes a momentary disconnection from the database for few seconds. Make sure that your business has a reconnection mechanism.
Most database, account, and network operations are unavailable during the momentary disconnection. Therefore, we recommend that you perform the switch during off-peak hours.
Directions
1. Log in to the TencentDB for SQL Server console, select the region and target instance in the instance list, and click Adjust Configuration in the Operation column.
2. In the Adjust Configuration window that pops up, select the desired architecture and click Confirm.
Note:
If data migration is involved during the change, you need to select the effective time and click the orange note; otherwise, you don't need to select the effective time.
During maintenance time: You can modify the maintenance time on the instance details page.
Adjust now: The configuration adjustment will be performed immediately.
3. You will be redirected to the instance list. When the instance status changes from Switching (after configuration adjustment) to Running, the architecture upgrade is completed. You can query and check the new architecture on the Instance List or Instance Details page.
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