Ask Slashdot: Free/Open Deduplication Software?

First time accepted submitter ltjohhed writes "We've been using deduplication products, for backup purposes, at my company for a couple of years now (DataDomain, NetApp etc). Although they've fully satisfied the customer needs in terms of functionality, they don't come across cheap — whatever the brand. So we went looking for some free dedup software. OpenSolaris, using ZFS dedup, was there first that came to mind, but OpenSolaris' future doesn't look all that bright. Another possibility might be utilizing LessFS, if it's fully ready. What are the slashdotters favourite dedup flavour? Is there any free dedup software out there that is ready for customer deployment?" Possibly helpful is this article about SDFS, which seems to be along the right lines; the changelog appears stagnant, though, although there's some active discussion.

Re:I've wanted deduplication for a long time!

[Ironchew]

When will Adblock Plus block these Microsoft ads on Slashdot?

Re:FreeBSD has ZFS

[grub]

Best get your eyes checked, I think that was our cat's anus you were in.
My wife and I love to sit around and de-dupe all night.

.

Re:Just store everything in /dev/null

[shish]

$ cat todo.txt > /dev/null
$ md5sum /dev/null
d41d8cd98f00b204e9800998ecf8427e /dev/null
$ cat aaah.png > /dev/null
$ md5sum /dev/null
d41d8cd98f00b204e9800998ecf8427e /dev/null
-

Duplicates!

Re:Dragonfly BSD's HAMMER...

[TheRaven64]

No, that's the opposite of deduplication...