On Fri, May 6, 2011 at 9:15 AM, Ray Van Dolson <rvandol...@esri.com> wrote:
> We use dedupe on our VMware datastores and typically see 50% savings, > often times more. We do of course keep "like" VM's on the same volume I think NetApp uses 4k blocks by default, so the block size and alignment should match up for most filesystems and yield better savings. Your server's resource requirements for ZFS and dedup will be much higher due to the large DDT, as you initially suspected. If bp_rewrite is ever completed and released, this might change. It should allow for offline dedup, which may make dedup usable in more situations. > Apologies for devolving the conversation too much in the NetApp > direction -- simply was a point of reference for me to get a better > understanding of things on the ZFS side. :) It's good to compare the two, since they have a pretty large overlap in functionality but sometimes very different implementations. -B -- Brandon High : bh...@freaks.com _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
