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High Latency with SM-BC

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Category:
ontap-9
Specialty:
perf
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Applies to

  • ONTAP 9
  • SnapMirror Business Continuity (SM-BC)

Issue

  • VMs in unmirrored volume take snapshot very fast.
  • VMs in mirrored volume, cannot respond to ping packets during taking snapshot.
  • VMs are moved to mirrored volume very slowly compared to being moved to a non-mirrored volume.
  • EMS errors are logged on the primary site:
Tue Apr 04 02:38:22 +0800 [Node1-01: repl_Handle_sync_resl: callhome.syncsm.exception:error]: Call home for SNAPMIRROR SYNCHRONOUS EXCEPTION: Network Latency exceeded threshold limit.

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