Help Center/ Elastic Cloud Server/ Drawer/ Purchasing an ECS/ Advanced Settings/ CBR
Updated on 2025-10-30 GMT+08:00
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CBR

Description

  • CBR

    Cloud Backup and Recovery (CBR) provides backup protection for EVS disks and ECSs, and uses backups to restore the EVS disks and ECSs. You can learn more about CBR by referring to CBR Overview. For CBR pricing details, see How Is CBR Billed?

    • Create new: Enter the name and capacity of the vault and set the backup policy. The vault capacity cannot be smaller than that of the ECS to be backed up. Its value ranges from the total capacity of the ECS to 10,485,760 GiB.
    • Use existing: Select an existing cloud backup vault and set a backup policy.
    • Not required: This function is not required. If you require this function after purchasing an ECS, log in to the CBR console and bind the desired cloud backup vault to your ECS. Based on service requirements, you can back up the data of all EVS disks (system and data disks) on an ECS, or back up the data of one or more EVS disks (system or data disks) attached to an ECS. For details, see Backing Up an ECS Data.
  • Vault

    A vault stores backups generated from ECSs or EVS disks. The system will associate an ECS with a vault and select backup policies to periodically back up the ECS.

  • Backup policy

    A backup policy allows a vault to automatically execute backup tasks at specified times or intervals. Periodic backups can be used to restore data quickly against data corruption or loss.

    In a backup policy, you can set the execution time, period, and retention rules of backup tasks, and bind a backup vault to a backup policy to automatically back up the vault. You can view or edit the backup policy on the CBR console.

    Learn more

FAQs

What Are the Differences Between Backup, Snapshot, and Image?

Backup (including ECS backup and EVS disk backup), snapshot, and image (including system disk image, data disk image, and full-ECS image) can be used as different backup types. They have similarities and differences in backup objects and application scenarios. You can select a proper backup type as needed by referring to What Are the Differences Between Backup, Snapshot, and Image?

How Do I Restore Data Using a Cloud Server Backup?

When disks on a server are faulty or server data is lost due to misoperations, you can use a backup to restore the server.

For details, see Restoring from a Cloud Server Backup.

To restore data to another server, see How Do I Restore Data on the Original Server to a New Server?

Restoring Data Using a Cloud Disk Backup

You can use a disk backup to restore the disk to its state when the backup was created.

For details, see Restoring from a Cloud Disk Backup.

To restore a data disk backup to the system disk, see How Do I Restore a Data Disk Backup to a System Disk?

How Do I Use a Backup to Create an Image?

You can create images using ECS backups and then use the images to quickly duplicate ECSs to restore services.

For details, see Using a Backup to Create an Image.

Parent Topic: Advanced Settings