/RAD=n
       /NORAD

    MODIFY/RAD=n affects only the entry for the specified resource
    affinity domain (RAD). The value of n is the RAD you specify.

    Usage Rules

    o  Do not use MODIFY/RAD=n to change the size of a reservation
       for an entry without a specified number or to change the
       state of the /ZERO or /PAGE_TABLES flags. (Flags are always
       consistent for all entries in a given reservation.)

    o  To change the RAD assignment for an entry, specify /RAD=n
       to identify the entry you want to change and /NEW_RAD=nn to
       identify the new RAD. Use only /NEW_RAD=nn (without the /RAD
       qualifier) if the old entry did not have a RAD assigned.

    o  Use MODIFY name /NORAD if you no longer want to tie memory
       for this reservation to any specific RADs. SYSMAN compresses
       multiple entries into a single entry for an unspecified RAD
       with the total memory size as the sum of all RAD entries for
       this reservation.