While we are working on demoing the feature under primary storage for SQL and exchange we have not yet.
From my research it is really dependant on configuration of controlers (and number of PEM's) in relation to the commoness of blocks and type of access.
That seams vauge but the reason is fairly simple
Netapp allows big solid state caches (PEM's) of commonly accessed blocks, and their dedup is cache aware. That means that even heavy IO loads are good performers if the blocks are from cache or the shared blocks are low (or infrequently accessed)
I can tell you the primary canidate (both theirs and ours) for dedup is system drives as they afford the most advantage with the cache
Jered Rassier
##If you have found my post has answered your question or helpful please mark it as such##
##If you have found my post has answered your question or helpful please mark it as such##
