# scconf -c -D name=dg-schost-1,nodelist=phys-schost-1
:phys-schost-2,\
preferenced=true,failback=enabled
# scconf -p | grep Device
Device group name:                             dg-schost-1
   Device group type:                          SDS
   Device group failback enabled:              yes
   Device group node list:                     phys-schost-1, phys-schost-2
   Device group ordered node list:             yes
   Device group diskset name:                  dg-schost-1