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    Data Online Migration:Agent-based migration overview

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    Data Online Migration:Agent-based migration overview

    Last Updated:Mar 31, 2026

    Deploy a Data Online Migration agent on a Linux machine to migrate data to Alibaba Cloud over a leased line or VPN, or from self-managed storage such as FTP servers and local file systems. Agents use your existing infrastructure and VPC network to provide a secure migration path.

    When to use an agent

    Agents are required for the following migration scenarios. For all other scenarios, such as migrating from third-party cloud storage to Alibaba Cloud or between Alibaba Cloud OSS buckets, no agent is needed.

    使用代理迁移流程图

    Important

    • Deploy the agent on an Alibaba Cloud Elastic Compute Service (ECS) instance.

    • If you select VPC as the network type, verify that the ECS instance is connected to an Alibaba Cloud VPC through a leased line or VPN, and that the instance is in the same region as the Data Online Migration console. Cross-region connections may cause network instability.

    Channels and agents

    Before you deploy an agent, create a channel and associate the agent with it. The channel-agent relationship follows these rules.

    • A tunnel can be associated with multiple agents at a time. You can specify the maximum bandwidth of the tunnel and the maximum number of requests per second over the tunnel to throttle the overall transmission for the agents associated with the tunnel.

    • Each agent can be associated with only one channel. The agent bandwidth is limited by the total bandwidth of the associated channel.

    Procedure

    To migrate data by using an agent, complete the following steps:创建代理任务

    1. Create a channel. See Channel management.

    2. Create an agent. See Agent management.

    3. Create a source data address. Follow the migration tutorial for your source data type. For example, to migrate from AWS S3, see Create a source address.

    4. Create a destination data address. Follow the migration tutorial for your source data type. For example, to migrate from AWS S3 to Alibaba Cloud OSS, see Migration implementation.

    5. Create a migration task. Follow the migration tutorial for your source data type. For example, to migrate from AWS S3 to Alibaba Cloud OSS, see Create a migration task.