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High disk latency on FlexArray system

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Category:
ontap-9
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Perf
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Applies to

  • Data ONTAP 8
  • ONTAP 9
  • FlexArray

Issue

  • Backend E-series or other FC disks presented to ONTAP as LUN's reporting high latency and impacting performance
  • Back to back Consistency Points
  • The following event is seen in event log:
    • [slifc_intrd: mlm.excessive.TPlatency:notice]: Average latency of 250527us on target port 20430080e54704b8, has exceeded 250000us

 

 

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