Tips for setting new ES indices and cluster

Does this looks strange? Await is very large, but utilization is small.. wondering why and how? What is normal range for "await" time?

Device:         rrqm/s   wrqm/s     r/s     w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
sda               0.09    57.49    0.15   18.29    17.52   607.14    33.88     0.03    1.39   0.48   0.88
dm-0              0.00     0.00    0.01    0.01     0.28     0.12    16.37     0.00   26.46   1.14   0.00
dm-1              0.00     0.00    0.12    0.12     0.92     2.61    15.18     0.00    5.22   0.31   0.01
dm-2              0.00     0.00    0.00    0.00     0.00     0.00    33.57     0.00    4.62   1.69   0.00
dm-3              0.00     0.00    0.52  101.60    87.43   814.06     8.83     0.28    2.74   0.10   0.98
dm-4              0.00     0.00    0.00    0.00     0.00     0.00     7.99     0.00    1.56   1.14   0.00
dm-5              0.00     0.00    0.00    0.29     0.04     2.35     8.10     0.00    3.35   0.47   0.01
dm-6              0.00     0.00    0.00    0.27     0.00     2.20     8.00     0.00    2.01   0.82   0.02
dm-7              0.00     0.00    0.00    0.72     0.03     5.72     8.03     0.00    1.41   0.59   0.04
sdb               0.00     9.42    0.20    5.74    33.20   121.86    26.10     0.02    3.15   0.44   0.26
sdc               0.00     8.08    0.20    3.98    38.00    97.21    32.28     0.02    4.92   0.54   0.23

There is no normal range. The more you have the more it is likely affecting performance.

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