topic At what level does de-duplication occur? in ONTAP Discussions

At what level does de-duplication occur?

stuengland — Thu, 05 Jun 2025 06:46:54 GMT

hi, I am trying to plan my storage for a new NetApp based storage solution I need to put into a new datacenter

We will be using VMware almost exclusively, as such NFS is where all the data will be stored

I am trying to decide how to break up the storage, and part of that decision will be based on where de-duplication occurs

Does is occur at the aggregate level or volume level?

At what level does de-duplication occur?

radek_kubka — Fri, 02 Sep 2011 16:31:21 GMT

Hi,

De-dupe scan is volume-wide, although metadata is stored in an aggregate.

In other words, two (or more) identical blocks within the same volume will be reduced to one, whilst two (or more) identical blocks in different volumes will not be de-duplicated.

Regards,

Radek

At what level does de-duplication occur?

baijulal — Fri, 02 Sep 2011 19:42:31 GMT

Search for TR3505 under below link.

http://www.netapp.com/us/library/

It is a good documentation on planning and deployment.