VMS Help Sys Parameters, NPAGERAD  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    (Alpha only) 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 the RADs that are
    not the base RAD. The system then assigns the remaining 4,194,304
    bytes to the base RAD.

    NPAGERAD has the GEN attribute.