CHECK
{ ALL
| DISK
    disk_name
    [, disk_name ]...
| DISKS IN FAILGROUP
    failgroup_name
    [, failgroup_name ]...
| FILE
    filename
    [, filename ]...
}
[ CHECK
  { ALL
  | DISK
      disk_name
      [, disk_name ]...
  | DISKS IN FAILGROUP
      failgroup_name
      [, failgroup_name ]...
  | FILE
      filename
      [, filename ]...
  }
]...
[ REPAIR | NOREPAIR ]