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Data Online Migration:Background information

Last Updated:Jun 04, 2025

This tutorial describes how to migrate data from S3-compatible sources to Alibaba Cloud Object Storage Service (OSS).

Overview

Data Online Migration is a data channel between different storage services of Alibaba Cloud. You can use Data Online Migration to migrate data from third-party data stores to OSS or between OSS buckets.

To use Data Online Migration, you need to specify information about the source data address and destination OSS address in the console, and then create a migration task. After the migration task starts, you can manage the task in the console. For example, you can view the progress and traffic information of the task.

Flowchart

Migration process

The following figure shows the migration process:迁移流程图

  • To ensure data security and consistency, we recommend that you use HTTPS.

  • After a data migration task is complete, you must check whether the data at the destination data address is consistent with the data at the source data address.

Warning

Make sure that you verify the migrated data at the destination after the migration task is complete. If you delete the data at the source data address before you verify the migrated data at the destination data address, you are liable for the losses and consequences caused by any data loss.

Process of creating a migration task

The following figure shows how to create a migration task:创建迁移任务

Important

When you read data from the source data address during a migration job, you are charged for outbound Internet traffic by the storage service provider of the source data address.

Tutorial contents

This tutorial includes the following content: