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How does Temperature Sensitive Storage Efficiency affect SnapMirror?

Last Updated:

Applies to

  • SnapMirror
  • Temperature Sensitive Storage Efficiency (TSSE)


  • Temperature Sensitive Storage Efficiency is a method of compressing data based on data "temperature", or how often the data is used
  • "Cold" data, or data that is not used often, is recompressed with a higher compression ratio for increased storage efficiency

Additional Information

  • TSSE is enabled for new volumes on AFF platforms running ONTAP 9.8 and later.
  • TSSE is available for existing volumes on AFF platforms running ONTAP 9.10.1 and later.
  • TSSE settings are inherited by SnapMirror destination volumes by default and the SnapMirror relationship continues to maintain a storage efficient transfer (LRSE).
    • No steps are needed to enable TSSE on SnapMirror destination volumes if supported by the ONTAP release and platform.
  • When replicating TSSE volumes to a ONTAP 9.6 or earlier destination, SnapMirror may fail with "Invalid data operation(Replication engine error)" or "Failed to start transfer. (Operation not supported)" see BUG 1384963 for more details and fixed releases. This issue does not occur with ONTAP 9.7 or later destinations.
  • If replicating from a TSSE volume to a destination in ONTAP 9.7 or earlier, compression savings will be lost over the network. SnapMirror will continue to maintain deduplication savings and will continue to report "Logical Transfer with Storage Efficiency" (LRSE).
  • TSSE is not compatible with FabricPool until ONTAP 9.10.1. If replicating from a TSSE SnapMirror source volume to a FabricPool SnapMirror destination running a release earlier than ONTAP 9.10.1, compressed blocks are decompressed at the destination before being tiered by FabricPool.
  • Parent topic: SnapMirror storage efficiency configurations and behavior


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