...it suit for an very large (several PB) heavily distributed storage (eg. for some kind of distributed, redundant filesystem) ? there are many systems that have been built using content-addressed storage, just not on top of venti. Here are a few. http://pdos.csail.mit.edu/pastwatch/ http://pdos.csail.mit.edu/ivy/ http://en.wikipedia.org/wiki/Distributed_hash_table russ