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- What's New
- Function Overview
- Product Bulletin
- Service Overview
- Billing
-
Getting Started
- Getting Started with RDS for MySQL
- Getting Started with RDS for MariaDB
- Getting Started with RDS for PostgreSQL
- Change History
- Huawei Cloud MySQL Kernel
-
User Guide
-
Working with RDS for MySQL
- Suggestions on Using RDS for MySQL
- Database Migration
- Performance Tuning
- Instance Lifecycle
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Instance Modifications
- Upgrading a Minor Version
- Changing a DB Instance Name
- Changing a DB Instance Description
- Changing the Replication Mode
- Changing the Failover Priority
- Changing a DB Instance Class
- Scaling Up Storage Space
- Configuring Storage Autoscaling
- Changing the Maintenance Window
- Changing a DB Instance Type from Single to Primary/Standby
- Promoting a Read Replica to Primary
- Manually Switching Between Primary and Standby DB Instances
- Changing the AZ of a Standby DB Instance
- Read Replicas
- Data Backups
- Data Restorations
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Parameter Templates
- Creating a Parameter Template
- Modifying Parameters of an RDS for MySQL Instance
- Exporting a Parameter Template
- Comparing Parameter Templates
- Viewing Parameter Change History
- Replicating a Parameter Template
- Resetting a Parameter Template
- Applying a Parameter Template
- Viewing Application Records of a Parameter Template
- Modifying a Parameter Template Description
- Deleting a Parameter Template
- Connection Management
-
Database Proxy (Read/Write Splitting)
- Introducing Read/Write Splitting
- Suggestions on Using Database Proxy
- Kernel Versions
- Best Practices for Database Proxy
- Enabling Read/Write Splitting
- Configuring Transaction Splitting
- Configuring Connection Pools
- Configuring Multi-Statement Processing Modes
- Changing a Proxy from Pay-per-Use to Yearly/Monthly
- Configuring the Delay Threshold and Routing Policy
- Changing the Read/Write Splitting Address
- Changing the Read/Write Splitting Port
- Changing the Instance Class of a DB Proxy Instance
- Changing the Number of Proxy Nodes
- Upgrading the Kernel Version of Database Proxy
- Enabling or Disabling Access Control
- Restarting a Database Proxy
- Modifying Read/Write Splitting Parameters
- Disabling Read/Write Splitting
- Testing Read/Write Splitting Performance
- Database Management
- Account Management (Non-Administrator)
- Account and Network Security
- Metrics
- Interconnection with CTS
- Log Management
- Task Center
- Billing Management
- Managing Tags
-
Working with RDS for MariaDB
- Suggestions on Using RDS for MariaDB
- Instance Connection
- Parameter Tuning
- Instance Lifecycle
- Instance Modifications
- Read Replicas
- Data Backups
- Data Restorations
-
Parameter Templates
- Creating a Parameter Template
- Modifying RDS for MariaDB Instance Parameters
- Exporting a Parameter Template
- Importing a Parameter Template
- Comparing Parameter Templates
- Viewing Parameter Change History
- Replicating a Parameter Template
- Resetting a Parameter Template
- Applying a Parameter Template
- Viewing Application Records of a Parameter Template
- Modifying a Parameter Template Description
- Deleting a Parameter Template
- Connection Management
- Database Management
- Account Management (Non-Administrator)
- Account and Network Security
- Metrics
- Interconnection with CTS
- Log Management
- Task Center
- Managing Tags
-
Working with RDS for PostgreSQL
- Suggestions on Using RDS for PostgreSQL
- Database Migration
- Performance Tuning
- Instance Lifecycle
-
Instance Modifications
- Upgrading a Minor Version
- Changing a DB Instance Name
- Changing a DB Instance Description
- Changing the Replication Mode
- Changing the Failover Priority
- Changing a DB Instance Class
- Scaling Storage Space
- Changing the Maintenance Window
- Changing a DB Instance Type from Single to Primary/Standby
- Manually Switching Between Primary and Standby DB Instances
- Changing the AZ of a Standby DB Instance
- Read Replicas
- Data Backups
- Data Restorations
-
Parameter Templates
- Creating a Parameter Template
- Modifying Parameters of an RDS for PostgreSQL Instance
- Exporting a Parameter Template
- Comparing Parameter Templates
- Viewing Parameter Change History
- Replicating a Parameter Template
- Resetting a Parameter Template
- Applying a Parameter Template
- Viewing Application Records of a Parameter Template
- Modifying a Parameter Template Description
- Deleting a Parameter Template
- Connection Management
- Extension Management
- Tablespace Management
- Account and Network Security
- Metrics
- Interconnection with CTS
- Log Management
- Task Center
- Billing Management
- Major Version Upgrade
- Managing Tags
-
Working with RDS for MySQL
- Best Practices
- Performance White Paper
-
API Reference
- Before You Start
- API Overview
- Calling APIs
- API v3.1 (Recommended)
-
API v3 (Recommended)
- Querying Version Information About APIs
- Querying Version Information About a DB Engine
- Querying Database Specifications
- Querying the Storage Type of a Database
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DB Instance Management
- Creating a DB Instance
- Stopping an Instance
- Changing a DB Instance Name
- Changing the Description of a DB Instance
- Changing DB Instance Specifications
- Scaling Up Storage Space of a DB Instance
- Changing a Single DB Instance to Primary/Standby DB Instances
- Rebooting a DB Instance
- Deleting a DB Instance
- Querying DB Instances
- Binding and Unbinding an EIP
- Changing the Failover Priority
- Manually Switching Primary/Standby DB Instances
- Changing the Data Replication Mode of Primary/Standby DB Instances
- Configuring the Maintenance Window
- Database Security
- Backup and Restoration
- Log Information Queries
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Database and Account Management (MySQL)
- Creating a Database
- Querying Details About a Database
- Querying Databases
- Querying Authorized Databases of a Specified User
- Deleting a Database
- Creating a Database Account
- Querying Database Users
- Querying Authorized Users of a Specified Database
- Deleting a Database Account
- Configuring a Password for a Database Account
- Authorizing a Database Account
- Revoking Permissions of a Database Account
- Resetting the Password for User root
- Database and Account Management (PostgreSQL)
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Parameter Management
- Obtaining a Parameter Template List
- Creating a Parameter Template
- Modifying a Parameter Template
- Applying a Parameter Template
- Modifying Parameters of a Specified DB Instance
- Obtaining the Parameter Template of a Specified DB Instance
- Obtaining Parameters in a Specified Parameter Template
- Deleting a Parameter Template
- Recycling a DB Instance
- Tag Management
- Obtaining Task Information
- Appendix
- Change History
- SDK Reference
-
FAQs
- Product Consulting
- Resource and Disk Management
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Database Connection
- What Should I Do If I Can't Connect to My RDS DB Instance?
- 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 Through a Private Network?
- 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?
- Why Cannot I Ping My EIP After It Is Bound to a DB Instance?
- How Can I Obtain the IP Address of an Application?
- 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?
- Database Migration
- Database Permission
- Database Storage
- Client Installation
- Backup and Restoration
- Database Monitoring
- Capacity Expansion and Specification Change
- Database Parameter Modification
- Network Security
- Change History
- Troubleshooting
- Videos
Show all
DB Instance Storage Types
The database system is generally an important part of an IT system and has high requirements on storage I/O performance. You can select a storage type based on service demands. You cannot change the storage type after the DB instance is created.
Description
RDS supports Cloud SSD (also called Ultra-high I/O) and Extreme SSD to suit different performance requirements of your workloads.
- Cloud SSD or Ultra-high I/O
Cloud SSDs and Ultra-high I/O drives are both cloud drives used to decouple storage from compute. The maximum throughput is 350 MB/s.
- For RDS for MySQL instances, this storage type is normally displayed as Cloud SSD, but for existing instances in certain regions it is displayed as Ultra-high I/O.
- For RDS for MariaDB, RDS for PostgreSQL and RDS for SQL Server instances, this storage type is displayed as Cloud SSD.
- Extreme SSD
Uses 25GE network and RDMA technologies to provide you with up to 1,000 MB/s throughput per disk and sub-millisecond latency.
- Only RDS for MySQL, RDS for PostgreSQL, and RDS for SQL Server support extreme SSDs.
Performance Comparison
Item |
Cloud SSD |
Extreme SSD |
---|---|---|
I/O performance |
Sub-par I/O performance due to additional network I/O overheads |
Higher I/O performance than cloud SSDs |
Elastic scalability |
Scaling in seconds |
Scaling in seconds |
Maximum IOPS |
50,000 |
128,000 |
Maximum throughput |
350 MB/s |
1000 MB/s |
Read/write latency |
1 ms |
Sub-millisecond |
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