# How Do I Configure Automatic Backup for a Server or Disk?

1. Go to the Cloud Backup and Recovery console and purchase a backup vault. You are advised to set the vault capacity to at least twice the total capacity of the resources you want to back up.
2. Associate resources with the vault during or after the purchase.
3. After the resources are associated, go to the Policies page to configure a backup policy. You are advised to back up data during off-peak hours, for example, early in the morning. Set the backup retention rule as needed. If your vault capacity is small, set a small value for the number of backups to be kept or the days that backups will be retained. Retention rule does not apply to manual backups.
4. Apply the policy you defined to the vault. The system then will back up the resources that are associated with the vault at the specified time and retains the backups based on the retention rule.

Parent topic: Policies