Page_Buffers=n

    Specifies the number of buffers to be allocated for each file
    to be moved. The number of buffers used is twice the number
    specified; half are used for reading the file and half for
    writing the moved files. Values specified with the Page_Buffers
    qualifier can range from 1 to 5. The default value is 3. Larger
    values might improve performance, but they increase memory usage.