Oldnews.com
"That chimes in with ideas of multi-tiering inside arrays. So far no-one is talking much about multi-tiered DAS but we can suppose that might come. The situation seems easier to understand with networked storage than it is with DAS, since DAS implies application server CPU cycles are used in deduping which seems a poor use of server CPU cycles."
Except Sun: http://blogs.sun.com/studler/entry/zfs_and_the_hybrid_storage
Funny, I find myself saying that alot... In olther old-news, they are working on de-duping it too...
Mine's the one with the SUN logo....