rds
- FAQs
- Product Consulting
- What Should I Pay Attention to When Using RDS?
- What Is the Availability of RDS DB Instances?
- Can I Use a Template to Create DB Instances?
- How Long Does It Take to Create a DB Instance?
- What Are the Differences Between RDS and Other Database Solutions?
- Will My RDS DB Instances Be Affected by Other User Instances?
- Does RDS Support Cross-AZ High Availability?
- Can RDS Primary/Standby DB Instances Be Changed to Single DB Instances?
- What Are the Browsers Supported By RDS?
- What Should I Do If Garbled Characters Are Displayed After SQL Query Results Are Exported to an Excel File?
- How Do I Create an AD Domain?
- Does the OPTIMIZE TABLE Operation Lock Tables on an RDS DB Instance?
- What Can I Do About Slow Respond of Websites When They Use RDS?
- Can I Change the Synchronize Model Between Primary DB Instances and Read Replicas?
- How Does a Cloud Database Perform a Primary/Standby Switchover?
- Does a Primary/Standby Switchover Have Impact on Services?
- How Do I Obtain the IP Address of the Standby DB Instance?
- Can Multiple ECSs Connect to the Same RDS DB Instance?
- Why Is an Error Reported When I Attempt to Delete a Database from RDS SQL Server Primary/Standby DB Instances?
- Can Primary and Standby RDS DB Instances Be Deployed in the Same AZ?
- Can I Encrypt the Disk After Purchasing an RDS DB Instance?
- Does RDS for MySQL Support Encryption Functions?
- Will Different RDS DB Instances Share CPU and Memory Resources?
- Does RDS Support 3-AZ Deployment?
- Resource and Disk Management
- Which Types of Logs and Files Occupy RDS Storage Space?
- Does RDS Support Scaling Down Storage Space of DB Instances?
- Which Items Occupy the Storage Space of My RDS DB Instances?
- What Overhead Does the Storage Space Have After I Applied for an RDS DB Instance?
- How Much Storage Space Is Required for DDL Operations?
- How Do I Release DB Instances in Expired or Frozen State?
- How Many DB Instances Can Run on RDS?
- How Many Databases Can Run on an RDS DB Instance?
- Database Connection
- Can an External Server Access the RDS Database?
- What Do I Do If the Number of RDS Database Connections Reaches the Upper Limit?
- What Is the Maximum Number of Connections to an RDS DB Instance?
- How Can I Create and Connect to an ECS?
- What Should I Do If an ECS Cannot Connect to an RDS DB Instance?
- What Should I Do If a Database Client Problem Causes a Connection Failure?
- What Should I Do If an RDS Database Problem Causes a Connection Failure?
- How Do My Applications Access an RDS DB Instance in a VPC?
- Do Applications Need to Support Reconnecting to the RDS DB Instance Automatically?
- How Can I Connect to a MySQL Database Through JDBC?
- How Can I Connect to a PostgreSQL Database Through JDBC?
- Why Cannot I Ping My EIP After It Is Bound to a DB Instance?
- How Can I Obtain the IP Address of an Application?
- What Should I Do If an RDS Microsoft SQL Server DB Instance Failed to Be Connected?
- What Can I Do If the Connection Test Failed?
- Can I Access an RDS DB Instance Over an Intranet Connection Across Regions?
- Is an SSL Connection to a DB Instance Interrupted After a Primary/Standby Switchover or Failover?
- Can RDS DB Instances in Different VPCs Communicate with Each Other Over an Intranet Connection?
- Is the Bandwidth Limited When an ECS Connects to an RDS DB Instance?
- Are There Any Potential Risks If There Are Too Many Connections to MySQL DB Instances?
- Does MySQL Support SSL Connections?
- Why Did the New Password Not Take Effect After I Reset the Administrator Password?
- Does RDS Have Restrictions on How Often Connections Can Be Queried?
- Does RDS for SQL Server Support Periodic Password Changes?
- Will I Be Logged Out If the Connection to SQL Server Times Out?
- How Do I Set the Encoding Format of the MySQL 8.0 Character Set?
- What Should I Do If No EIPs Are Available When I'm Attempting to Bind an EIP?
- Database Migration
- Why Do I Need to Use the mysqldump or pg_dump Tools for Migration?
- What Should I Do When a Large Number of Binlog Files Cause Storage Space Insufficiency During an RDS MySQL Instance Migration?
- Does RDS Support Cross-Region Migration?
- What Types of DB Engines Does RDS Support for Importing Data?
- How Many Migration Methods Does RDS for MySQL Support?
- Database Permission
- Why Does the Root User Not Have the Super Permissions?
- How Do I Grant RDS FullAccess Permissions to a Sub-user?
- What Are the Differences Between RDS ManageAccess and DAS Permissions?
- Does RDS for MySQL Support Multiple Accounts?
- Can Multiple Users Log In to DAS at the Same Time? Will the Accounts Be Locked If I Enter Wrong Passwords Several Times in a Row?
- Why Is an Error Reported When I Attempt to Create an Object on an RDS for Postgres DB Instance as a Common User?
- What Should I Do If a Role Failed to Be Deleted from an RDS for PostgreSQL Instance?
- Why Has My RDS for PostgreSQL Migration Failed?
- How Do I Grant the REPLICATION Permission to an RDS for PostgreSQL Database User?
- Why Is An Error Reported When I Attempt to Change a Table Owner of the RDS for PostgreSQL Database?
- How Are the Login Name Permissions of RDS for SQL Server 2017 Enterprise Edition Primary/Standby DB Instances Synchronized to Its Read Replicas?
- After a Primary Instance Account Is Deleted and Recreated on RDS for SQL Server, Will the Permissions Be Automatically Synchronized?
- How Do I View Authorized Databases After a Local Client Is Connected to a DB Instance?
- Database Storage
- Does RDS for MySQL Support TokuDB?
- Is RDS for MySQL Compatible with MariaDB?
- What Storage Engines Does the RDS for MySQL Support?
- What Is the RDS DB Instance Storage Configuration?
- Does RDS for MySQL Support Stored Procedures and Functions?
- Can I Change the Storage Type of an RDS DB Instance from Common I/O to Ultra-high I/O?
- Why Did My Primary RDS DB Instance Become Read-Only?
- What Should I Do If My Data Exceeds the Available Storage of an RDS DB Instance?
- Database Performance
- Client Installation
- Database Usage
- PostgreSQL Enhanced Edition
- Backup and Restoration
- How Long Does RDS Store Backup Data For?
- How Do I Clear RDS Backup Space?
- Where Are RDS Backup Files Stored?
- Can My Database Be Used in the Backup Window?
- How Is RDS for MySQL Backup Data Charged?
- How Can I Back Up an RDS Database to an ECS?
- How Do I Restore Backup Files on HUAWEI CLOUD to a Local Database?
- Are Manual Backups Still Billed After My RDS DB Instances Have Been Deleted?
- Will the Backup Data File Be Retained After an RDS DB Instance Is Deleted?
- How Are Unsynchronized Backups Generated for RDS SQL Server DB Instances?
- Why Has My Automated Backup Failed?
- What Happens to Database Backups After an RDS DB Instance Is Deleted?
- Will My Backups Be Deleted If I Delete My Cloud Account?
- Why Is a Table or Data Missing from My Database?
- How Do I Use Differential Backup Provided by RDS for MySQL?
- Does RDS for PostgreSQL Support Table PITR?
- Can I Dump Backup Files to OBS Buckets?
- Does RDS for MySQL Support Table-Level Backup to a Specified OBS Bucket?
- How Do I View My Backup Storage Usage?
- Can RDS Directly Read Binlog Backup Files?
- Can I Delete the RDS for MySQL Backup Policy?
- Read Replicas and Read/Write Splitting
- Database Monitoring
- Capacity Expansion and Specification Change
- Database Parameter Modification
- What Inappropriate Parameter Settings Cause Unavailability of the PostgreSQL Database?
- How Can I Change the Time Zone?
- How Do I Change the RDS Transaction Isolation Level?
- How Do I Ensure that the Character Set of an RDS MySQL Database Is Correct?
- Does RDS for PostgreSQL Support the test_decoding Plugin?
- What Should I Do If Modifications to RDS PostgreSQL Parameters Do Not Take Effect After a DB Instance Reboot?
- How Do I Use the utf8mb4 Character Set to Store Emojis in an RDS for MySQL DB Instance?
- Where Should I Store the NDF Files for Microsoft SQL Server?
- Can I Change the VPC that My RDS DB Instance Belongs To?
- Can I Use SQL Commands to Modify Global Parameters?
- How Do I Modify the Collation of RDS for SQL Server?
- How Do I Set Case Sensitivity for RDS MySQL Table Names?
- What Should I Do If I Don't Have the Permission to Change the event_scheduler Settings?
- Log Management
- How Long Is the Delay for RDS MySQL Slow Query Logs?
- How Do I View All SQL Logs Executed by MySQL?
- What's the Slow Query Threshold for Microsoft SQL Server?
- How Can I Obtain Microsoft SQL Server Error Logs Using Commands?
- Can I Export Statistics on RDS Slow Query Logs?
- Does the SQL Audit Function Affect Database Performance?
- How Long Can RDS Error Logs Be Retained?
- Can I Optimize Slow SQL Statements from the DAS Console?
- How Do I View Deadlock Logs of RDS for MySQL?
- Network Security
- What Security Protection Policies Does RDS Have?
- How Can I Ensure the Security of RDS DB Instances in a VPC?
- How Can Data Security Be Ensured During Transmission When I Access RDS Through an EIP?
- How Can I Prevent Untrusted Source IP Addresses from Accessing RDS?
- How Do I Configure a Security Group to Enable Access to RDS DB Instances?
- How Can I Import the Root Certificate to a Windows or Linux OS?
- How Can I Identify the Validity Period of an SSL Root Certificate?
- How Can I Identify Data Corruption?
- Version Upgrade
- Developer-Related APIs and SDKs
- Change History
- Product Consulting
Does RDS Support Cross-AZ High Availability?
Updated at: Jun 09, 2021 GMT+08:00
Yes. RDS supports cross-AZ high availability. When you buy primary/standby DB instances, you can select different AZs for them.
Figure 1 Cross-AZ high availability
Parent topic: Product Consulting
