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Data Online Migration:Background information

Last Updated:Feb 05, 2024

This tutorial describes how to migrate data from Tencent Cloud Object Storage (COS) to Alibaba Cloud Object Storage Service (OSS). This feature is not supported in Data Online Migration of the previous version. To proceed, use Data Online Migration of the new version.


Alibaba Cloud Data Online Migration provides a data migration channel between different storage services. Data Online Migration can be used to migrate data from third-party data stores to OSS or between OSS buckets.

To use Data Online Migration, you need to log on to the Data Transport console, specify information about the source and destination OSS buckets, and create a migration job. After the migration job starts, you can manage the job in the console. For example, you can view the progress and traffic information of the job. You can also generate a migration report to check the list of migrated files and the list of files that fail to be migrated.

  • Data Online Migration allows you to migrate files only from a COS V5 bucket to an OSS bucket. For more information about COS versions, see SDK version history.

  • 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.


This tutorial contains the following topics: