NPAGERAD specifies the total number of bytes of nonpaged pool
    that will be allocated for Resource Affinity Domains (RADs)
    other than the base RAD. For platforms that have no RADs,
    NPAGERAD is ignored. Notice that NPAGEDYN specifies the total
    amount of nonpaged pool for all RADs.

    Also notice that the OpenVMS system might round the specified
    values higher to an even number of pages for each RAD, which
    prevents the base RAD from having too little nonpaged pool. For
    example, if the hardware is an AlphaServer GS160 with 4 RADs:

    NPAGEDYN = 6291456 bytes
    NPAGERAD = 2097152 bytes

    In this case, the OpenVMS system allocates a total of
    approximately 6,291,456 bytes of nonpaged pool. Of this amount,
    the system divides 2,097,152 bytes among the RADs that are not
    the base RAD. The system then assigns the remaining 4,194,304
    bytes to the base RAD.

                                   NOTE

       The system actually rounds up to an even number of pages
       on each RAD. In addition, the base RAD is never assigned a
       value less than the smaller of the value of NPAGEDYN and 4
       megabytes.

    When NPAGERAD is 0 (the default), the system calculates a value
    to use for NPAGERAD with the following formula:

                       Base RAD memory
       NPAGEDYN * (1 - --------------- )
                         Total memory

    This calculation gives more pool to the non-base RADs than before
    and, therefore, reduces the expansion of non-base RADs.

    NPAGERAD has the GEN attribute.