Updated on 2025-12-02 GMT+08:00
Migration Task Overview
If there is less than 3 TB of data or less than 5 million objects in a source bucket, create a migration task to quickly migrate the source data.
- By default, if a task stays in a waiting state for more than 30 days, OMS automatically puts the task into a Failed state and clears the AK/SK pair used by the task. To prevent task failures caused by blocking, do not create tasks too frequently.
- If an object is larger than 500 GB, migrating it takes a long time. You can submit a service ticket to whitelist the object for migration in segments.
- During the migration, the system automatically creates a temporary folder named OMS in the destination bucket. Do not perform any operations on this folder, including but not limited to modifying, deleting, or adding data in the folder. Otherwise, the migration will be interrupted or fail.
Parent topic: Migration Tasks
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