VMS Help BACKUP Command, Qualifiers, /BUFFER_COUNT  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /BUFFER_COUNT=n

    Command Qualifier

    This qualifier is obsolete. You can still specify the /BUFFER_
    COUNT qualifier, although it has no effect. (This ensures that
    command procedures containing this qualifier will still operate
    correctly.) Compaq recommends that you remove the /BUFFER_COUNT
    qualifier from command procedures.