On 6/15/2010 10:52 AM, Erik Trimble wrote:
Frankly, dedup isn't practical for anything but enterprise-class
machines. It's certainly not practical for desktops or anything
remotely low-end.
This isn't just a ZFS issue - all implementations I've seen so far
require enterprise-class solutions.
Realistically, I think people are overtly-enamored with dedup as a
feature - I would generally only consider it worth-while in cases
where you get significant savings. And by significant, I'm talking an
order of magnitude space savings. A 2x savings isn't really enough to
counteract the down sides. Especially when even enterprise disk space
is (relatively) cheap.
That all said, ZFS dedup is still definitely beta. There are known
severe bugs and performance issues which will take time to fix, as not
all of them have obvious solutions. Given current schedules, I
predict that it should be production-ready some time in 2011. *When*
in 2011, I couldn't hazard...
Maybe time to make Solaris 10 Update 12 or so? <grin>
One thing here - I forgot to say, this is my opinion based on my
observations/conversations on this list, and I in no way speak for
Oracle officially, or as a member of the ZFS team (which I'm not).
--
Erik Trimble
Java System Support
Mailstop: usca22-123
Phone: x17195
Santa Clara, CA
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