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Date: Sun, 6 Jul 2008 17:56:46 +0200 (CEST)
From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To: John Nielsen <lists@jnielsen.net>
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Cc: freebsd-questions@freebsd.org
Subject: Re: FreeBSD + ZFS on a production server?
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> point:
>
> On Thursday 12 June 2008 07:37:06 am Wojciech Puchar wrote:
>> you must have disks dedicated for raidz, disks dedicated for mirrored
>> storage and disks dedicated for unprotected storage. it's inflexible
>> and not much usable.
>>
>> actually - much less usable than "legacy"
>> gmirror/gstripe/gconcat+bsdlabel.

looks like my mistake - or simply a shortcut that made statement 
imprecise.

it should be added:
----

ZFS can be installed on partitions and share disks with other things, but 
the performance will be bad.

ZFS - contrary to every other filesystem that use FreeBSD disk I/O 
scheduler - does it's own I/O scheduling, so it assumes it's the only user 
of physical drive.

if both non-ZFS and ZFS filesystem will share the same disk AT THE SAME 
TIME - there will be a lots of thrashing.