Background Information

A user has an ECS with only one system disk in CN North-Beijing4. To implement cross-region disaster recovery 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, CBR cloud server backup would be an ideal choice.

To replicate the ECS from CN North-Beijing4 to CN South-Guangzhou, the user needs to back up the ECS in CN North-Beijing4, replicates the backup to CN South-Guangzhou, uses the backup replica to create a full-ECS image, and then uses the image to create an ECS in CN South-Guangzhou. This way, data on the ECS has been migrated to CN South-Guangzhou.

Procedure

1. Log in to the ECS console, switch to the CN North-Beijing4 region, and locate the target ECS in the server list. See Figure 1.
   Figure 1 Target ECS information
   

2. Choose More > Create Backup in the Operation column. Switch to CBR Console to purchase a vault. Make sure that the target ECS is selected when purchasing a vault.
3. After the vault is created and associated with the ECS, back up the ECS. See Figure 2.
   Figure 2 Performing the backup
   

4. Switch to the cloud server backup page on CBR Console, and confirm that the backup is successfully created in the destination vault. Then, choose More > Create Replica in the Operation column to replicate the backup to CN South-Guangzhou. See Figure 3.
   If the destination vault does not exist, go to the destination region to create a replication vault first.

   Figure 3 Creating a replica
   

5. Switch to the CN South-Guangzhou region. Choose Cloud Server Backup, find the replicated backup replica_001 in the backup list. 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. This backup can be deleted only after the image is deleted.

   Figure 4 Creating an image
   

6. On the IMS console in CN South-Guangzhou, find the new image created 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
   

7. View the server details page. It can be seen that the ECS data has been migrated from CN North-Beijing4 to CN South-Guangzhou. See Figure 6.
   Figure 6 Successful cross-region ECS data migration