Skip to main content
NetApp Knowledge Base

Understanding SnapMirror storage efficiency

  1. Last updated
  2. Save as PDF
Views:
6,641
Visibility:
Public
Votes:
5
Category:
snapmirror
Specialty:
dp
Last Updated:

Applies to

  • ONTAP 9
  • SnapMirror
  • Storage Efficiency

Answer

  • SnapMirror preserves the storage efficiency (deduplication, compression, compaction, etc.) from the source unless additional forms of compression are applied to the destination, with the exception of Temperature Sensitive Storage Efficiency
  • The below table represents storage efficiency combinations on source and destination volumes and the transfer result
    • Deduplication (D)  - Inline or background / post-process
    • Adaptive Compression (Ca) - Inline or postprocess
    • Secondary Compression (Cs) - Inline or postprocess
    • Temperature Sensitive Storage Efficiency (TSSE) - ONTAP 9.8 and later on AFF platforms
Source Destination Result
D or No storage efficiency D or No additional storage efficiency All source deduplication savings are maintained and additional deduplication scanners run against transferred Snapshots on the destination when the transfer completes (if configured)
D, Ca or Cs D or No additional storage efficiency All source deduplication and compression savings are maintained and additional deduplication scanners run against transferred Snapshots on the destination when the transfer completes (if configured)
TSSE TSSE All source deduplication and compression savings are maintained with some exceptions. See How does Temperature Sensitive Storage Efficiency affect SnapMirror?
D, Ca or Cs D, Ca or Cs All source storage efficiency savings are lost. Additional deduplication and compression scanners run against transferred Snapshots on the destination when the transfer completes.
Any combination of storage efficiency Any storage efficiency including Ca or Cs All source storage efficiency savings are lost. Additional deduplication and compression scanners run against transferred Snapshots on the destination when the transfer completes.

Additional Information

 

NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.