topic Volume snapmirror available space difference in General Discussion

Volume snapmirror available space difference

Julien_Mos — Wed, 04 Jun 2025 09:56:07 GMT

Hi,

I wonder how is that possible that my source and destination volume have not the same available space ?

It's okey to have some GB, i mean the synchronisation has to be execute, but when we talk about hundred of GB is that normal ?

Re: Volume snapmirror available space difference

Ontapforrum — Mon, 31 Oct 2022 08:32:12 GMT

Please attach the screenshot of the difference, it helps.

In the mean time - Could you also give us the output of how the 'storage efficiency' is configured for the source/dest. If the storage efficiency configuration on the destination volume does not match source volume, it will result in loss of storage efficiency on transfer. In this case, destination volume shows higher disk usage than source volume. Also, mention the ONTAP version.

Re: Volume snapmirror available space difference

Julien_Mos — Mon, 31 Oct 2022 09:15:21 GMT

Effiency is enable on the source volume, but not on the dest. (that what i red in the documentation of Netapp).

Ontap version : Ontap 9.6P2

Re: Volume snapmirror available space difference

Ontapforrum — Mon, 31 Oct 2022 09:27:31 GMT

ok. That could explain the difference in space.

Understanding SnapMirror storage efficiency - NetApp Knowledge Base

https://kb.netapp.com/Advice_and_Troubleshooting/Data_Protection_and_Security/SnapMirror/Snapmirror_Destination_volume_space_usage_is_greater_than_Source_volume

https://kb.netapp.com/Advice_and_Troubleshooting/Data_Protection_and_Security/SnapMirror/How_to_enable_SnapMirror_storage_efficiency_between_volumes_with_different_compression_types