dedup in SAN environment

[nsitps1976]

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).

[BrendonHiggins]

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

[peluso]

excellent blog post Brendon!

terri

[nsitps1976]

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

Regards

[peluso]

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

[nsitps1976]

Many thanks for this Teresa.

[nsitps1976]

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 ??