Use Cloud Backup to implement cross-region or cross-zone disaster recovery for Elastic Compute Service (ECS) instances. This topic walks you through the end-to-end workflow.
The following diagram shows the end-to-end workflow for implementing ECS disaster recovery in the Cloud Backup console.
Cross-region and cross-zone disaster recovery follow the same workflow. The examples in this topic use cross-region disaster recovery.
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Activating Cloud Backup is free. You are charged for the Cloud Backup client used for ECS disaster recovery and for cross-region replication traffic. For pricing details, see Billing methods and billable items.
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Create a disaster recovery site pair
A disaster recovery site pair consists of a production site and a disaster recovery site. Specify the name, region, and virtual private cloud (VPC) for each site.
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Add the ECS instances to be protected
Add the ECS instances to protect. This step ensures that the ECS instances can be initialized.
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Enable real-time replication to continuously replicate ECS instance data to Alibaba Cloud.
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Perform a disaster recovery drill
Start a protected ECS instance in the cloud to verify that applications behave as expected.
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If a critical failure occurs at the production site, switch workloads to the disaster recovery site. Conduct regular drills to confirm that applications can be restored at any time.
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After failing over from Region A to Region B, replicate applications back from Region B to Region A.