High device bandwidth utilization

Hi All,
Please have a look on the below outputs of a same command in two different servers with same configuration.

iostat -x sda
Linux 2.6.32-220.el6.x86_64 (hostname 1) 04/01/2014 x86_64 (8 CPU)

avg-cpu: %user %nice %system %iowait %steal %idle
0.07 0.00 0.07 0.80 0.00 99.06

Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz avgqu-sz await svctm %util
sda 0.94 0.43 3.84 0.41 109.91 6.75 27.43 0.21 48.63 13.08 5.56

iostat -x sda
Linux 2.6.32-220.el6.x86_64 (hostname 2) 04/01/2014 x86_64 (8 CPU)

avg-cpu: %user %nice %system %iowait %steal %idle
1.31 0.00 0.24 0.05 0.00 98.39

Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz avgqu-sz await svctm %util
sda 0.11 1.89 0.03 1.71 2.74 28.78 18.14 0.01 8.29 3.65 0.63

I need to know why these bandwidth utilization values differ for both the servers though these are with a same configuration.
Please Suggest.
Regards,
Rahul