Overview

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Continuous Data Replication (CDR) is a business continuity solution provided by Alibaba Cloud Hybrid Disaster Recovery. This solution provides a Recovery Point Objective (RPO) in seconds and a Recovery Time Objective (RTO) in minutes for critical enterprise applications.

Video introduction

Watch the following video for a quick overview of CDR.

Core problems solved

  • Ensure business continuity. You can replicate core business data from on-premises data centers or Alibaba Cloud to the cloud in real time to achieve an RPO measured in seconds. If a major failure occurs in an on-premises data center, you can launch services on the cloud within minutes to achieve an RTO measured in minutes.

  • Migrate enterprise applications to the cloud. You can replicate servers from on-premises data centers to the cloud and recover them as ECS instances. This process facilitates online application migration.

Key features

  • Real-time application data replication. CDR monitors and scrapes data changes from operating system disks, ECS disks, and newly added source disks in real time. These changes are sent to a disaster recovery site for real-time data protection. This process achieves an RPO measured in seconds.

  • Fast application recovery on the cloud. You can quickly launch applications replicated to the cloud as ECS instances on Alibaba Cloud. This recovery process takes only a few minutes.

  • Disaster recovery drills without business interruption. You can run disaster recovery drills on replicated application servers at any time to verify business recovery capabilities. During these drills, the source production environment is not affected and data replication continues without interruption.

Core advantages

  • Low cost. The service consumes only disk resources and a small amount of compute resources on the cloud. Except during disaster recovery periods, no extra software licenses for operating systems or applications are required.

  • Easy to use. No disaster recovery center planning is required. You can deploy the CDR gateway in your on-premises data center from a virtual machine template. After you install the client, you can start disaster recovery replication with a single click in the cloud. Drills and recovery can also be completed with a single click.

  • High reliability. The service ensures continuous data replication and can resume from breakpoints, even during events such as source server payload bursts, server restarts, gateway restarts, or network jitter on the replication link. Alibaba Cloud ensures the reliability of data replicated to the cloud.

  • High security. AES-256 data encryption and HTTPS link encryption provide end-to-end data security.

  • Verifiable. You can test systems recovered on the cloud at any time without affecting the production system. This makes it easy to verify your disaster recovery plan.