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High latency spikes on a MetroCluster IP system due to bursts of NVRAM traffic

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Category:
metrocluster
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metrocluster
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Applies to

  • ONTAP 9
  • MetroCluster IP

Issue

  • Intermittent latency spikes reported by customer
  • EMS reporting congestion:

Wed Mar 01 13:01:14 +0100 [NodeA1: mccip_mirror_congestion_mgr_p: mcc.network.congestion:notice]: Network congestion detected. Action taken: Increased ic_timeout to 1200 msec.

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