Server 2012 - Deduplication

Hi

OK prior to having dedup, i tried the tool and found big savings.

Now i have the server, the sizing is curious.

I was not expecting the "size on disk" for my folders to be SO SMALL

=> Can someone explain ?

=> If this is the way the system works, can you establish at a directory level the % of savings ?

(obviously the dir did not beome 1/100th of its size)

Thanks