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How to adjust the SnapMirror-Synchronous Common Snapshot Schedule for performance tuning

Last Updated:

Applies to

  • ONTAP 9
  • SnapMirror-Synchronous (SM-S)
  • Common Snapshot Schedule (CSS)


  • The Common Snapshot Schedule (CSS) of a SnapMirror-Synchronous (SM-S) relationship can cause latency
  • Adjusting the schedule to be more frequent (smaller snapshots) or less frequent can help even out latency spikes to be predictable
  • This article gives the example for creating a schedule every 3 hours starting at 1:03 AM cluster time but can be customized to fit your application needs
  • The schedule can be made from 1 hour to 24 hours


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