/RAD=n

    Specifies the RAD number on which to run batch jobs assigned
    to the queue. The RAD value is validated as a positive integer
    between 0 and the value returned by the $GETSYI item code, SYI$_
    RAD_MAX_RADS.

    RAD is supported on AlphaServer GS series systems and starting
    from OpenVMS Version 8.4, support is extended to NUMA capable
    Integrity servers.