Parameter | Description |
Migration Job Type | The type of the migration job. Select Operating System Migration. |
Current Operating System | By default, the current operating system is displayed and cannot be modified. In this example, CentOS 7 is displayed. |
Destination Operating System | Select the operating system to which you want to migrate the source operating system from the drop-down list. In this example, Alibaba Cloud Linux 3 is selected. |
Migration Test | Specifies whether to enable the migration test feature. A migration test is a process of simulating and verifying a migration solution before you perform an actual migration. It can help you fully understand the feasibility and risks of the migration solution before the actual migration is performed. This reduces the issues and losses that may occur during the actual migration. A migration test helps you identify issues that may occur during the migration, provides solutions to the issues, and improves the migration success rate. By default, this feature is enabled. Warning If the migration test feature is enabled, a basic disk snapshot is created for the ECS instance during the migration test. If the Execution Method parameter is not set to Test and Migrate or the migration test is abnormal, the snapshot is automatically rolled back to the point in time at which the snapshot was created after the migration test is complete. The point in time at which the snapshot was created is the point in time at which the migration test starts. The data generated during the migration test is lost. |
Execution Method | The mode in which the migration test is to be performed and the server migration job is to be run. By default, Test and Migrate is selected. In this example, Test Only is selected. Valid values: Test Only: The system performs only the migration test. After the migration test is complete, you must manually start the server migration job. Test and Migrate: The system performs the migration test. After the migration test is complete, if no test items are in the Critical state, the system automatically starts the operating system migration job.
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