Migration scenario | Description | Procedure |
Migrate an ECS instance within the same account and region | Migrate an ECS instance within the same Alibaba Cloud account and region. The destination ECS instance can be in the same zone as or a different zone from the source ECS instance. Note In this migration scenario, the source and destination instances belong to the same Alibaba Cloud account. | Select a migration method based on your business requirements. Use the ECS replication feature Use SMC |
Migrate data between ECS instances in the same Alibaba Cloud account and across zones | Migrate an ECS instance within the same Alibaba Cloud account and region. The destination ECS instance and the source ECS instance must be in different zones. You can change the instance type (number of vCPUs and memory size) within the same instance family when you migrate an instance across zones.
Note In this migration scenario, the source and destination instances are the same and no new instances are created. | When you migrate an ECS instance, select the destination zone and the instance type that you want to use to replace the original instance type based on your business requirements. For more information, see Change instance types across zones. |
Migrate an ECS instance within the same Alibaba Cloud account and across regions | Migrate an ECS instance within the same Alibaba Cloud account and across regions. Note In this migration scenario, the source and destination instances belong to the same Alibaba Cloud account. | Select a migration method based on your business requirements. Use the ECS replication feature Use SMC After you copy the image of a source ECS instance to a destination region, you can obtain the image copy that has a different ID in the region. When you copy the source image, you can specify the configurations of the image copy, such as the tags, resource group, and encryption attributes. Then, you can use the image copy to create ECS instances. Perform the following steps: Create a custom image from the source ECS instance. For more information, see Create a custom image from an instance. Copy the custom image to the destination region. For more information, see Copy a custom image. Create an ECS instance from the image copy. For more information, see Create an instance by using a custom image.
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Migrate an ECS instance across Alibaba Cloud accounts and in the same region | Migrate an ECS instance across Alibaba Cloud accounts and within the same region. Note In this migration scenario, the source and destination instances belong to different Alibaba Cloud accounts. | Select a migration method based on your business requirements. Use the ECS replication feature and the image sharing feature Use SMC |
Migrate an ECS instance across Alibaba Cloud accounts and regions | Migrate an ECS instance across Alibaba Cloud accounts and regions. Note In this migration scenario, the source and destination instances are two instances under different Alibaba Cloud accounts. | Select a migration method based on your business requirements. Use the ECS replication feature and the image sharing feature Use SMC After you copy an image of a source ECS instance to a destination region, you can share the image copy with other Alibaba Cloud accounts. Then, the accounts can use the image copy to create ECS instances. Perform the following steps: Create a custom image from the source ECS instance. For more information, see Create a custom image from an instance. Copy the custom image to the destination region. For more information, see Copy a custom image. Share the image copy with another Alibaba Cloud account. For more information, see Share a custom image. Create an ECS instance from the shared image. For more information, see Create an instance by using a custom image.
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