How Do I Migrate ECS Data Across Regions Using CSBS?

Context

A user has an ECS with only one system disk in CN South-Guangzhou. To implement cross-region DR and fast service deployment in a different region, the user needs to create a same ECS with the same data in that region. In this case, CSBS is an ideal choice.

To replicate the ECS in CN South-Guangzhou to CN North-Beijing4, the user needs to back up the ECS in CN South-Guangzhou, replicates the backup to CN North-Beijing4, and uses the replicated backup to create a full-ECS image. Then the image can be used to create an ECS for cross-region migration.

Procedure

1. Log in to the ECS console, find the target ECS, and back it up. See Figure 1.
   Figure 1 Target ECS information
   

2. Locate the row that contains the target ECS, click More in the Operation column, and select Create Backup. Select Immediate Backup. See Figure 2.
   Figure 2 Creating a backup
   

3. Switch to the CSBS console page, confirm that the backup is successfully created. In the Operation column, choose More > Cross-region Replicate. See Figure 3. Replicate the backup to CN North-Beijing4.
   Figure 3 Cross-region replication
   

4. Switch to the CN North–Beijing4 region. Go to the CSBS console, find the replicated backup manual_rep_001. An R icon is displayed next to the backup name. In the Operation column, click Create Image.

   Create an image using the backup. See Figure 4. The backup used to create an image can be deleted only after the image is deleted.

   Figure 4 Creating an image
   

5. On the Image Management Service (IMS) console page in CN North-Beijing4, locate the newly created image and click Apply for Server in the Operation column to create a server. See Figure 5. Set other parameters based on service requirements.
   Figure 5 Creating a server
   

6. After the server is created, view the details to confirm that cross-region migration of ECS data succeeds. See Figure 6.
   Figure 6 Successful ECS data migration across regions