It doesn't seem to be a problem on -current.. I've had: sd0 at scsibus0 target 0 lun 0 sd1 at scsibus0 target 1 lun 0 sd2 at scsibus0 target 2 lun 0 sd3 at scsibus0 target 3 lun 0 sd8 at scsibus0 target 8 lun 0 sd9 at scsibus0 target 9 lun 0 in my config file for quite a while and everything's behaving nicely.