OnCommand Unified Manager (UM) 6.x and later reports 'Managed volume ' ' of subscribed volume ' ' is missing on node' Primary data, Mirror, or Backup to an application such as SnapProtect or CommVault...OnCommand Unified Manager (UM) 6.x and later reports 'Managed volume ' ' of subscribed volume ' ' is missing on node' Primary data, Mirror, or Backup to an application such as SnapProtect or CommVault Simpana. first to remove this volume node member from this storage service and then to create a new protection volume as part of the storage service.