/sys$common/syshlp/helplib.hlb SET, DEVICE, /SERVED, Example  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  $ SET DEVICE/SERVED DRA4:

      The SET DEVICE/SERVED command in this example instructs the
      MSCP server to make the disk device DRA4 on your local node
      available to all other processors on your cluster.