Help Center> Elastic Volume Service> User Guide> Managing EVS Backups
Updated on 2024-03-12 GMT+08:00
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Managing EVS Backups

Scenarios

EVS backups are created using the CBR service.

You can configure a backup policy for disks. With backup policies configured, data on EVS disks can be periodically backed up to improve data security.

Constraints

  • Backups can be created only when the disks are in the Available or In-use state.
  • Only users with the CBR FullAccess permissions can use the cloud disk backup function. If the user does not have the permissions, contact the account administrator to grant the permissions first.

Purchasing a Disk Backup Vault and Applying a Backup Policy

  1. Log in to the CBR console.

    1. Log in to the management console.
    2. Choose Storage > Cloud Backup and Recovery > Cloud Disk Backups.

  2. In the upper right corner, click Buy Disk Backup Vault.
  3. Select a billing mode.

    • Yearly/monthly is a prepaid billing mode. You are billed based on the subscription duration you specify. This mode provides lower prices and is ideal when the resource use duration is predictable.
    • Pay-per-use is a postpaid billing mode. You are billed based on your resource usage. With this mode, you can increase or delete resources at any time. Fees are deducted from your account balance.

  4. (Optional) In the disk list, select the disks you want to back up. After disks are selected, they are added to the list of selected disks.

    Figure 1 Selecting disks
    • Only Available and In-use disks can be selected.
    • You can also associate disks with the vault you are creating later if you skip this step.

  5. Specify a vault capacity ranging from the total sizes of disks to 10,485,760 GiB.
  6. Configure auto backup.

    • If you select Configure, you must then select an existing backup policy or create a new one. After the vault is created, the system applies this backup policy to the vault, and all disks associated with this vault will be automatically backed up based on this policy.
    • If you select Skip, disks associated with this vault are not automatically backed up.

  7. If you have subscribed to Enterprise Project, add the vault to an existing enterprise project.

    An enterprise project facilitates project-level management and grouping of cloud resources and users. The default project is default.

  8. (Optional) Add tags to the vault.

    A tag consists of a key-value pair. Tags are used to identify, classify, and search for vaults. Vault tags are used to filter and manage vaults only. You can add up to 10 tags for a vault.

    Table 1 describes the tag parameters.
    Table 1 Tag parameters

    Parameter

    Description

    Example Value

    Key

    A tag key of a vault must be unique. You can customize the key or select the key of an existing tag created in TMS.

    A tag key:

    • Can contain 1 to 36 Unicode characters.
    • Cannot be left blank, cannot start or end with spaces, or contain non-printable ASCII (0-31) characters or the following special characters: =*<>\,|/

    Key_0001

    Value

    A tag value can be repetitive or left blank.

    A tag value:

    • Can contain 0 to 43 Unicode characters.
    • Can be an empty string, cannot start or end with spaces, or contain non-printable ASCII (0-31) characters or the following special characters: =*<>\,|/

    Value_0001

  9. Specify a name for the vault.

    The name can contain 1 to 64 characters including digits, letters, underscores (_), and hyphens (-), for example, vault-612c.

    You can use the default name, which is in the format of vault_xxxx.

  10. Specify the subscription duration if you select Yearly/Monthly for Billing Mode. You can choose 1 month to 3 years for the usage duration.

    Determine whether to enable auto renewal. If you select Auto Renewal:

    • Your subscription will be renewed each month for monthly billing.
    • Your subscription will be renewed each year for yearly billing.

  11. Click Next. Confirm the purchase details and continue.
  12. Complete the payment as prompted.
  13. Go back to the disk backup page. The vault you created is displayed in the list.

    You can associate disks to the new vault or create backups for the disks. For details, see Vault Management.