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NVRAM latency in Azure without reaching the limits

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

Applies to

  • ONTAP 9
  • CLOUD VOLUMES ONTAP
  • Azure

Issue

  • File copy rate is lower than expected
  • The latency is observed on vNVRAM during write operation operation
  • vNVRAM limits such as IOPS or Throughput were not reached
  • vNVRAM throughput drops to 69-86 MB/s and ldma_latency spikes to 150-185ms

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