Freenas 11 power optimization

My power consumption went from 65watt idle to 29watt idle:
What did I do: 

• Move system dataset to the freenas-boot pool
• gui -> system -> system dataset

• Enable power saving deamon
•  gui -> system -> advanced -> enable powerd
• Configure smart to check only spinning disk (prevent unnecessary disk spinup)
• gui -> storage -> view disk > smart extra option -> -n standy
• Check disk power state script (run commandline)
• !/bin/bash
  devlist=(ada0 ada1 ada2 ada3 ada4 ada5)
  timeout=30
  while [ 1 ]
  do
          echo -n `date`
  
          for LINE in "${devlist[@]}"; do
                  CM=$(camcontrol cmd $LINE -a "E5 00 00 00 00 00 00 00 00 00 00 0
  0" -r - | awk '{print $10}')
                  if [ "$CM" = "FF" ] ; then
                          echo -n " SPINNING  "
                  elif [ "$CM" = "00" ] ; then
                          echo -n "   IDLE    "
                  else
                          echo -n "  UNKNOWN  "
                  fi
          done
  echo
  sleep $timeout
  done
• use camcontrol to set disk spindown

• gui -> tasks > init/shutdown script -> command / camcontrol standby ada(x) -t 600 / postinit (1 command for every disk)