VMS Help START, /QUEUE, Qualifiers, /AUTOSTART_ON  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /AUTOSTART_ON=(node::[device][,...])

    Designates the queue as an autostart execution queue and
    specifies the node, or node and device, on which the queue can
    be located. Both node and device must be specified for output
    queues. For batch queues, only node is applicable.

    In an OpenVMS Cluster, you can specify more than one node (or
    node and device) on which a queue can run, in the preferred order
    in which nodes should claim the queue. This allows the queue
    to fail over to another node if the node on which the queue is
    running leaves the cluster.

    For autostart queues, the START/QUEUE command activates the queue
    for autostart. The queue will begin processing jobs when the
    ENABLE AUTOSTART/QUEUES command is entered for a node on which
    the queue can run.

    This qualifier cannot be used with the /ON or /GENERIC qualifier;
    however, you can specify the /AUTOSTART_ON qualifier for a queue
    previously created or started with the /ON qualifier. Doing so
    overrides the /ON option and makes the queue an autostart queue.

    For more information about autostart queues, refer to the chapter
    about managing queues in the OpenVMS System Manager's Manual.