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Is it expected behavior for Volume efficinecy settings on SnapMirrorĀ source changed to be false after AFF snapmirror resync?

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Category:
ontap-9
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dp
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Applies to

ONTAP 9.3 + AFF

Answer

Yes. it is caused by ONTAP 9.3's design limitation.

Additional Information

ONTAP has a design change after ONTAP9.3 as below.

volume efficiency show after

resync src ->dst -> break

-> resync dst ->src

AFF + ONTAP 9.3

AFF + ONTAP 9.4 or later 

original source

                           Efficiency Policy Name: auto
 
                                      Compression: false
                               Inline Compression: false

                                    Inline Dedupe: false
                                  Data Compaction: true
                Cross Volume Inline Deduplication: false
            Cross Volume Background Deduplication: false
                         Extended Compressed Data: true

                           Efficiency Policy Name: auto
 
                                      Compression: true
                               Inline Compression: true

                                    Inline Dedupe: true
                                  Data Compaction: true
                Cross Volume Inline Deduplication: true
            Cross Volume Background Deduplication: true
                         Extended Compressed Data: true

original destination

                           Efficiency Policy Name: -
 
                                      Compression: false
                               Inline Compression: false

                                    Inline Dedupe: false
                                  Data Compaction: true
                Cross Volume Inline Deduplication: false
            Cross Volume Background Deduplication: false
                         Extended Compressed Data: true

                           Efficiency Policy Name: -
 
                                      Compression: false
                               Inline Compression: false

                                    Inline Dedupe: false
                                  Data Compaction: true
                Cross Volume Inline Deduplication: false
            Cross Volume Background Deduplication: false
                         Extended Compressed Data: true