topic Re: dedup in SAN environment in ONTAP Discussions

dedup in SAN environment

nsitps1976 — Thu, 05 Jun 2025 07:01:43 GMT

How should volumes / LUNs be setup to gain maximum benefit from deup in a VMware SAN environment (No of LUNs per volume, space guarantees, reservations, when to de dup etc).

Re: dedup in SAN environment

BrendonHiggins — Fri, 21 Jan 2011 11:32:46 GMT

Still a work in progress but this is what I have been playing with.

http://communities.netapp.com/people/BrendonHiggins/blog/2010/10/23/free-storage--storage-efficiency

Hope it helps

Bren

Re: dedup in SAN environment

peluso — Fri, 21 Jan 2011 16:52:28 GMT

excellent blog post Brendon!

terri

Re: dedup in SAN environment

nsitps1976 — Mon, 24 Jan 2011 08:59:24 GMT

Thanks Brendon - I will have a look at this and come back with any questions..

Regards

Re: dedup in SAN environment

peluso — Tue, 25 Jan 2011 23:42:59 GMT

Hi Nael,

FYI - We did an Ask the Expert event about Dedupe in SAN environment -- here is the archive of discussions and documentation shared during the event.

http://communities.netapp.com/community/events/ask_the_expert/ask_the_expert-dedupe_san

Re: dedup in SAN environment

nsitps1976 — Wed, 26 Jan 2011 09:13:53 GMT

An example:

A 1TB volume with a 950GB LUN both thin – 800GB’s worth of VMs are added to the LUN – Duplication is ran – The 800GB has reduced to 300GB.

How is free space reclaimed in the aggregate?

Does the LUN and volume shrink (from the storage perspective) down to 300 ish GB ??

Re: dedup in SAN environment

nsitps1976 — Wed, 26 Jan 2011 09:14:57 GMT

Many thanks for this Teresa.