Skip to main content
NetApp Knowledgebase

How to enable SnapMirror storage efficiency between volumes with different compression types

Applies to

  • ONTAP 9
  • SnapMirror
  • SnapVault


  1. 'Logical Transfer with Storage Efficiency (LRSE)' : All source-side storage efficiency savings are maintained by SnapMirror.
  2. 'Logical Transfer (LRE)' : All source-side storage efficiency savings are lost during transfer, but can be re-gained at the destination.
  • SnapMirror preserves storage efficiency on the source and destination volumes only when post process data compression on destination volume is disabled.
  • If compression is enabled on the SnapMirror(XDP) destination, then the savings from the source are not retained over the network transfer.
  • If the source and destination volumes have a different compression type (source volume: adaptive compression; destination volume: secondary compression; or vice versa), then the savings from the source are not retained over the network transfer.

Sourcecluster::*> volume efficiency show -fields compression-type,state,compression
vserver volume state   compression-type compression
------- ------ ------- ---------------- -----------
SRC     vol1   Enabled adaptive         true

Destinationcluster::*> volume efficiency show -fields compression,state,compression-type,policy
vserver volume  state   policy compression-type compression
------- ------- ------- ------ ---------------- -----------
DST     vol1dst Enabled -      secondary        true

Destinationcluster::*> snapmirror show
Source            Destination Mirror  Relationship   Total             Last
Path        Type  Path        State   Status         Progress  Healthy Updated
----------- ---- ------------ ------- -------------- --------- ------- --------
SRC:vol1    XDP  DST:vol1dst  Snapmirrored Idle      -         true    -

Example: snapmirror_audit_logs
Mon May 11 02:42:58 GMT 2020 ManualUpdate[May 11 02:42:53]:788427ca-9330-11ea-a1b5-005056b04021 Operation-Uuid=1ca35fe2-9331-11ea-a1b5-005056b04021 Group=none Operation-Cookie=0 action=End source=SRC:vol1 destination=DST:vol1dst status=Success bytes_transferred=634856848 network_compression_ratio=1.0:1 transfer_desc=Logical Transfer - Optimized Directory Mode



Registered NetApp customers get unlimited access to our dynamic Knowledge Base.

New authoritative content is published and updated each day by our team of experts.

Current Customer or Partner?

Sign In for unlimited access

New to NetApp?

Learn more about our award-winning Support