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Simultaneous high write Latency from all aggregates of a node

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Applies to

ONTAP 9

Issue

  • Application response times degraded for critical workloads

Disk Write Latency - 1.png

  • At the same time point, all aggregates under the same node experience back-to-back CP.
  • This results in high latency due to WAFL Susp CP.
  • No hardware faults, disk errors, or front-end port bottlenecks observed.

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