Hi,

ZFS has de-duplication built on top of SHA256 hashes.
If the verify option is also enabled, it is possible for ZFS to work around 
detect hash collisions (although this option slows things down further).

But ZFS can be considered as a kind of 'central authority' so its 
de-duplication scheme may not work in a distributed setting.

Regards,
Robbert.

On Sep 27, 2013, at 2:50 AM, Wolfgang Eder <[email protected]> wrote:

> hi,
> in recent discussions on this list, the idea of using hashes to
> identify or even name things is often mentioned.
> in this context, hashes are treated as being unique;
> 
> albeit unlikely, it *is* possible that hashes are equal
> for two distinct things. are there ideas about
> how to handle such a situation?
> 
> thanks and kind regards
> wolfgang
> _______________________________________________
> fonc mailing list
> [email protected]
> http://vpri.org/mailman/listinfo/fonc

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