---
features:
  - |
    The cinder-backup service can be configured to store backups on external
    Ceph clusters defined by the ``CephExternalMultiConfig`` parameter. New
    ``CinderBackupRbdClusterName`` and ``CinderBackupRbdClientUserName``
    parameters can be specified, which override the default ``CephClusterName``
    and ``CephClientUserName`` values respectively.