avg-cpu:  %user   %nice %system %iowait  %steal   %idle
           0.08    0.08    1.75    2.34    0.00   95.76

Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
sda               1.27        47.52       237.68    3411355   17063872
sdb              32.19      7376.13       243.26  529561497   17464416
sdc              20.83      7406.45       243.04  531738177   17448936
sdd              20.58      7391.94       243.02  530696889   17447552
sde              31.63      7401.53       243.30  531384952   17467296
sdf              23.49       125.16      7474.64    8985712  536634328
md0             109.12       292.59       767.72   21006096   55117928