Beware of what is being included in the data reduction ratio
Hi all, Dimitris from Nimble (ex-NetApp).
Several vendors show a single efficiency number that is nebulous and includes all kinds of stuff, including thin provisioning and snapshots. Diving into the true savings often reveals a much less compelling story.
It is more appropriate to be able to show what efficiency is coming from where. For instance, this much saving from dedupe, this much from compression, this much from clones, stuff like that.
A guarantee needs to be clear regarding what precisely is counted in the data reduction.
I've written a vendor-agnostic article on this subject:
http://recoverymonkey.org/2016/05/19/the-importance-of-the-effective-capacity-ratio-in-modern-storage-systems/
Thx
D
