zfs discuss - Feb 2010 - copies=2 and dedup

I want zfs on a single drive so I use copies=2 for -some- extra safety. 
But I wonder if dedup=on could mean something in this case too? That way 
the same blocks would never be written more than twice. Or would that 
harm the reliability of the drive and should I just use copies=2?

-- 
Dick Hoogendijk -- PGP/GnuPG key: 01D2433D
+ http://nagual.nl/ | OpenSolaris 2010.03 b131
+ All that''s really worth doing is what we do for others (Lewis Carrol)

On Sat, Feb 27, 2010 at 10:40 AM, Dick Hoogendijk <dick at nagual.nl>
wrote:
> I want zfs on a single drive so I use copies=2 for -some- extra safety. But
> I wonder if dedup=on could mean something in this case too? That way the
> same blocks would never be written more than twice. Or would that harm the
> reliability of the drive and should I just use copies=2?
>
ZFS will honor copies=2 and keep two physical copies, even with
deduplication enabled.

-- 
Giovanni Tirloni
sysdroid.com
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