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Unable to connect to Storage Account leading to high disk latency in CVO

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80
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Category:
cloud-volumes-ontap-cvo
Specialty:
perf
Last Updated:

Applies to

  • Cloud Volumes ONTAP
  • Microsoft Azure
  • Azure Storage Account

Issue

  • High latency observed for the volumes coming from "disk IO"
  • Statit output shows few disks as 100% utilized.

disk             ut%  xfers  ureads--chain-usecs writes--chain-usecs cpreads-chain-usecs greads--chain-usecs gwrites-chain-usecs
/aggr0_ss68cvhanas01_01/plex0/rg0:
0d.8              51  43.39    8.92   4.37 102167  28.34  13.43 31560   6.12   1.23 361549   0.00   ....     .   0.00   ....     .
/aggr1/plex0/rg0:
0d.22             89  99.57   40.64   3.95 104857  46.88  16.17 25733  12.06   1.29 343941   0.00   ....     .   0.00   ....     .    <-- Belongs to same storage account
0d.15             73  60.83   24.04   3.20 129439  28.65   7.92 62615   8.14   1.34 334300   0.00   ....     .   0.00   ....     .    
0d.23             81  74.38   31.45   3.18 130273  33.63   9.61 50344   9.29   1.17 395026   0.00   ....     .   0.00   ....     .
0d.21             94 113.33   44.77   3.17 130084  54.57  11.02 37182  14.00   1.23 357531   0.00   ....     .   0.00   ....     .
0d.2               3 113.43   46.56   3.26  1306  52.79  11.38   462  14.07   1.32  4290   0.00   ....     .   0.00   ....     .
0d.9               3 109.59   43.17   3.27  1375  52.70  11.83   420  13.72   1.36  4272   0.00   ....     .   0.00   ....     .
0d.13              3 113.08   45.73   3.44  1294  53.46  11.84   436  13.89   1.35  4276   0.00   ....     .   0.00   ....     .
0d.6               3 109.93   42.24   3.25  1378  53.37  11.80   448  14.31   1.14  5074   0.00   ....     .   0.00   ....     .
0d.14              3 113.49   50.03   3.20  1305  50.65  16.06   337  12.81   1.53  3572   0.00   ....     .   0.00   ....     .
0d.19              3 106.89   48.15   3.57  1254  46.97  17.92   313  11.77   1.52  3682   0.00   ....     .   0.00   ....     .
0d.0               3 106.33   51.42   3.59   991  43.91  20.42   263  11.00   1.63  2970   0.00   ....     .   0.00   ....     .

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