/BY_PRIORITY
       /BY_PRIORITY DSAn:

    Displays a list of shadow sets on the system, sorted in the order
    in which a recovery operation (copy, full merge, or minimerge)
    is scheduled to occur. If a copy or merge is active, the display
    shows on which system it is occurring. This list is specific to
    the system on which the command is executed, so the list might
    vary across systems in a cluster. Higher numbers indicate a
    higher priority.

    Tip: When the command specifies a virtual unit (DSAn:), the
    display shows the current priority and status of just this
    virtual unit. If any copy or merge operations are in progress,
    the system on which the operation is occurring is also displayed,
    along with the operation's progress.