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Service Disruption During Cluster Interconnect Migration from 25G to 100G

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Applies to

  • ONTAP 9
  • AFF/FAS/ASA
  • Cluster Interconnect migration
  • Datastores used by KVM/Virtualization platforms

Issue

  • During a planned cluster interconnect migration from 25GbE to 100GbE (including a change from switched to switchless cluster), a subset of KVM virtual machines using NFSv3 datastores experienced a temporary I/O stall.
  • Quite a few VMs entered a “paused” state.

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