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Why the Flash Cache reads may be very low during Performance issues

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Category:
ontap-9
Specialty:
perf
Last Updated:

Applies to

ONTAP 9

Issue

  • Performance issues are seen on user or VM applications and latency is higher than desired in ONTAP
  • In Active IQ Unified Manager (AIQUM) the Flash Cache hit rate is low at 15%

Example:

Flash Cache latency.png

 

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