topic Re: discrepancy btw volume size and transferred size by SnapMirror in ONTAP Discussions

discrepancy btw volume size and transferred size by SnapMirror

heightsnj — Wed, 04 Jun 2025 12:47:52 GMT

I am calculating the snapmirroring speed.

Total Transferred suze us 25.7GB by "snapmirror show" command.
However, it shows me total used size is 40GB by "df -g" command on the destination after initialization and completed with snapmirroring.

So, why they have showed me in different sizes, and there are 14.3GB differences?

How much data really have been transferred?

Thanks!

Re: discrepancy btw volume size and transferred size by SnapMirror

RajeshPanda — Tue, 02 Apr 2019 05:02:12 GMT

@heightsnj Let me know if you are still looking for the solution, i will help you find an expert who can answer to your query.

Re: discrepancy btw volume size and transferred size by SnapMirror

heightsnj — Thu, 11 Apr 2019 16:25:26 GMT

@RajeshPanda

Yes, i am still looking for the answer. Thanks!

Re: discrepancy btw volume size and transferred size by SnapMirror

artur_alikulov — Sun, 14 Apr 2019 22:04:46 GMT

What is the size of the volume on your source system? Do you use deduplication and compression?

The difirence could be because of data efficiency technologies. SnapMirror preserves storage efficiency on the source and destination volumes, with one exception, when postprocess data compression is enabled on the destination. In that case, all storage efficiencyis lost on the destination