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Migration Solution Overview

Updated on 2025-01-10 GMT+08:00

You can migrate data from DDM, GaussDB, TaurusDB, self-managed MySQL databases, self-managed Oracle databases, or MySQL databases built on other clouds to RDS for MySQL, or from one RDS for MySQL instance to another RDS for MySQL instance.

Data migration tools include Data Replication Service (DRS), mysqldump, and Data Admin Service (DAS). You are advised to use DRS because it is easy to use and can complete a migration task in minutes. DRS facilitates data transfer between databases, helping you reduce DBA labor costs and hardware costs.

DRS provides real-time migration and synchronization.

  • Real-time migration: With DRS, you can migrate data from sources to destinations in real time. You just need to create a replication instance to connect to both the source and destination and configure objects to be migrated. DRS will help you compare metrics and data between the source and destination, so you can determine the best time to switch to the destination database while minimizing service downtime.
  • Real-time synchronization: It refers to the real-time flow of workload data from sources to destinations through a synchronization instance while consistency of data is ensured. It is different from migration. Migration means moving entire data of a database to another. Synchronization refers to the continuous flow of data between different applications.

For more information, see What Is DRS?

NOTE:

During a DRS full migration, a large number of binlogs are generated in a short period of time and may be temporarily stored on your instance, which may cause the storage space to be used up. You are advised to enable autoscaling for your instance. To free up storage space, you can set an appropriate retention period for binlogs and clear the binlogs in a timely manner.

Migration Solutions

Table 1 RDS for MySQL migration solutions

Source Database

Data Size

One-Time or Continuous Migration

Application Downtime

Solution

Document

RDS for MySQL

Small

One-time

Some time

Use mysqldump to copy data from the source to the destination RDS for MySQL instance.

Migrating Data to RDS for MySQL Using mysqldump

Any

One-time or continuous

Minimal

Use DRS to migrate table, database, or instance data of the source to the destination RDS for MySQL instance.

NOTE:

For details about real-time migration billing, see DRS Migration Billing.

From MySQL to RDS for MySQL

Medium

One-time

Some time

Use DAS to export data from the source and then import the data to the destination RDS for MySQL instance.

Migrating Data to RDS for MySQL Using the Export and Import Functions of DAS

Any

One-time or continuous

Minimal

Use DRS to synchronize data from the source to the destination RDS for MySQL instance.

From MySQL to RDS for MySQL

Any

Continuous

Minimal

Use DRS to synchronize data from the source to the DR RDS for MySQL instance.

NOTE:

If there is a regional failure, this solution can ensure service continuity by synchronizing data between databases.

DDM

Any

One-time or continuous

Minimal

Use DRS to synchronize data from DDM to RDS for MySQL.

From DDM to RDS for MySQL

GaussDB distributed

Any

One-time or continuous

Minimal

Use DRS to synchronize data from a GaussDB distributed instance to RDS for MySQL.

From GaussDB Distributed to RDS for MySQL

GaussDB primary/standby

Any

One-time or continuous

Minimal

Use DRS to synchronize data from a GaussDB primary/standby instance to RDS for MySQL.

From GaussDB Primary/Standby to RDS for MySQL

TaurusDB

Any

One-time or continuous

Minimal

Use DRS to synchronize data from TaurusDB to RDS for MySQL.

From TaurusDB to RDS for MySQL

  • On-premises MySQL databases
  • MySQL databases on ECSs

Any

One-time or continuous

Minimal

Use DRS to migrate data from self-managed MySQL databases to RDS for MySQL.

DRS supports incremental migration, so you can replicate ongoing data changes to keep sources and destinations in sync while minimizing the impact of service downtime and migration.

NOTE:

For details about real-time migration billing, see DRS Migration Billing.

Migrating Data from Self-Managed MySQL Databases to RDS for MySQL

Any

One-time or continuous

Minimal

Use DRS to synchronize data from self-managed MySQL databases to RDS for MySQL.

Real-time synchronization refers to the real-time flow of workload data from sources to destinations through a synchronization instance while consistency of data is ensured. It is suitable for real-time analysis, and data transfer in report systems and data warehouses.

From MySQL to RDS for MySQL

Any

Continuous

Minimal

Use DRS to synchronize data from self-managed MySQL databases to the DR RDS for MySQL instance.

NOTE:

If there is a regional failure, this solution can ensure service continuity by synchronizing data between databases.

  • On-premises Oracle databases
  • Oracle databases on ECSs

Any

One-time or continuous

Minimal

Use DRS to synchronize data from self-managed Oracle databases to RDS for MySQL.

From Oracle to RDS for MySQL

MySQL databases on other clouds

Any

One-time or continuous

Minimal

Use DRS to migrate data from MySQL databases on other clouds to RDS for MySQL.

NOTE:

For details about real-time migration billing, see DRS Migration Billing.

Migrating MySQL Databases from Other Clouds to RDS for MySQL

Any

One-time or continuous

Minimal

Use DRS to synchronize data from MySQL databases on other clouds to RDS for MySQL.

From MySQL to RDS for MySQL

Any

Continuous

Minimal

Use DRS to synchronize data from MySQL databases on other clouds to the DR RDS for MySQL instance.

NOTE:

If there is a regional failure, this solution can ensure service continuity by synchronizing data between databases.

DRS Migration Billing

  • Real-time migration supports only the pay-per-use billing mode.

    Real-time migration tasks are free of configuration and traffic fees in the first seven days, lowering your costs for migrating data to the cloud.

  • Real-time synchronization and DR support pay-per-use and yearly/monthly billing modes.

    Real-time migration and synchronization will provide long-term discounts, lowering your costs for data transfers.

For more information, see Data Replication Service Billing.

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