VMS Help SHOW, DEVICES, /SERVED, Qualifiers, /HOST  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Displays the names of the processors that have MSCP served
    devices on line. The System Generation utility (SYSGEN) command
    MSCP/HOST determines how many hosts in the OpenVMS Cluster can
    connect to the MSCP server at one time.