# for i in a b c d; do echo /dev/sdd; smartctl -a /dev/sdd | grep -e Rotation -e Power_Cycle -e Model -e Power_On; echo; done
/dev/sdd
Model Family:     Hitachi Ultrastar 7K3000
Device Model:     Hitachi HUA723020ALA641
Rotation Rate:    7200 rpm
  9 Power_On_Hours          0x0012   098   098   000    Old_age   Always       -       17002
 12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       28

/dev/sdd
Model Family:     Hitachi Ultrastar 7K3000
Device Model:     Hitachi HUA723020ALA641
Rotation Rate:    7200 rpm
  9 Power_On_Hours          0x0012   098   098   000    Old_age   Always       -       17002
 12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       28

/dev/sdd
Model Family:     Hitachi Ultrastar 7K3000
Device Model:     Hitachi HUA723020ALA641
Rotation Rate:    7200 rpm
  9 Power_On_Hours          0x0012   098   098   000    Old_age   Always       -       17002
 12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       28

/dev/sdd
Model Family:     Hitachi Ultrastar 7K3000
Device Model:     Hitachi HUA723020ALA641
Rotation Rate:    7200 rpm
  9 Power_On_Hours          0x0012   098   098   000    Old_age   Always       -       17002
 12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       28


