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List:       freebsd-fs
Subject:    Re: [ZFS] Prompt, which is lost space in the ZFS pool?
From:       Peter Jeremy <peterjeremy () acm ! org>
Date:       2011-07-21 20:51:00
Message-ID: 20110721205100.GA72403 () server ! vk2pj ! dyndns ! org
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On 2011-Jul-20 00:06:08 +0300, "Vladislav V. Prodan" <universite@ukr.net> wrote:
>Now rewriting the hierarchy /backup with the option dedup=on to ZFSv28
>May be can save some space.

I strongly suggest you do some reading up on the impact of dedup and
perform extensive testing before enabling dedup.  ZFS dedup places
very high demands on RAM and can cause significant degradation of
write and delete operations.  At this point in time, it's probably
only of use in very specific cases.

-- 
Peter Jeremy

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