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

    On VAX systems, AWSMIN establishes the lowest number of pages to
    which a working set limit can be decreased by automatic working
    set adjustment.

    On Alpha systems, AWSMIN establishes the lowest number of
    pagelets to which a working set limit can be decreased by
    automatic working set adjustment.

    AWSMIN is a DYNAMIC parameter.