Server Migration Center (SMC) allows you to migrate one or more source servers to Alibaba Cloud. Source servers can be servers in data centers, virtual machines, hosts on other cloud platforms, or servers of other types. This topic describes the migration process of SMC.

Migration process

When you use SMC to migrate source servers to Alibaba Cloud, you must complete required settings on the source server and in the SMC console. You must run the SMC client on the source server, import the information of the source server to the SMC console, and then create and run a migration task in the SMC console. The following figure shows the procedure. dasda
  1. Before you begin

    Create an Alibaba Cloud account, complete real-name verification, activate Resource Access Management (RAM), authorize SMC to access your cloud resources, and obtain an AccessKey pair.

  2. Step 1: Import the information of a migration source

    In the SMC console, download and decompress the SMC client. Upload the SMC client to the source server and run the SMC client. Then, import the information of the source server to the SMC console.

  3. Step 2: Create and start a migration task
    Create and start a migration task in the SMC console. You can specify one of the following destination image types based on your business requirements:
    • ECS image: You can migrate the source server to an Elastic Compute Service (ECS) instance. The ECS instance is created from an ECS image.
    • Destination instance: You can migrate the source server to an ECS instance that you have purchased. The storage system and operating system of the source server must be compatible with those of the ECS instance.
    • Container image: You can migrate the source server to Container Registry. Then, you can deploy containerized applications in Container Registry at low costs.

Usage notes

Before you use SMC to perform migration, take note of the following information:
  • Do not perform operations on the intermediate instance.

    To run a migration task, SMC creates a temporary intermediate instance named No_Delete_SMC_Transition_Instance within your Alibaba Cloud account. For more information, see What are the specifications available for intermediate instances? Do not stop, restart, or release the intermediate instance when a migration task is running. Otherwise, the migration task fails. After the migration task is completed, SMC automatically releases the intermediate instance.

  • By default, the following data directories are migrated:
    • Windows servers: Only the data on the C drive (including shared directories that are attached to the C drive) is migrated as a partition of the system disk. If you need to migrate the data from other partitions such as the D drive, you must select and configure the data disk when you create a migration task. For more information, see Step 2: Create and start a migration task.
    • Linux servers:
      • Linux servers: If you do not enable block replication, the data in all subdirectories (including shared subdirectories) in the root directory is migrated as a partition of the system disk. If you need to migrate the data in other directories such as /disk1, you must select and configure the data disk when you create a migration task. For more information, see Migration task parameters. If you do not need to migrate the data of multiple directories, see Step 1: Import the information of a migration source.
      • If you enable block replication, only the subdirectories in the root partition of the system disk, such as /and /boot, are migrated by default. If you need to migrate data from other partitions, you must select and configure the data disk when you create a migration task. For more information, see Step 2: Create and start a migration task.