The RESERVE command sends a SCSI Reserve command to the media
    robot. This reserves the media robot for exclusive use on the
    host. This is useful in Fibre Channel environment where multiple
    hosts have access to same media robot. If a media robot is reserved
    on a host all other hosts will not be able to do any SCSI commands
    and they will get a message "SCSI Reservation Conflict".

    Format

    RESERVE [ROBOT robot_name]