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MetroCluster high write latency due to ISL cabling distance mismatch

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Applies to

  • Fabric MetroCluster
  • ONTAP 9

Issue

Many mlm.excessive.TPlatency alerts are shown in the EMS log, similar to this: 
Mon Jan 01 01:00:00 XX [Cluster-01: slifc_intrd: mlm.excessive.TPlatency:notice]: Average latency of XXXXus on target portXXXXXXXXXXXXXXXX, has exceeded 250000us.

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