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Date:      Thu, 28 May 2015 10:16:20 +0100
From:      krad <kraduk@gmail.com>
To:        Jon Radel <jon@radel.com>
Cc:        Baho Utot <baho-utot@columbus.rr.com>,  FreeBSD Questions <freebsd-questions@freebsd.org>
Subject:   Re: FreeBSD 10.1 + ZFS
Message-ID:  <CALfReyfLYdZLSnukaQp9-6PGbAHW35KawnJp88VDdtw6ctbLPw@mail.gmail.com>
In-Reply-To: <55662C35.4000802@radel.com>
References:  <5563939F.2070303@columbus.rr.com> <86oal8gu30.fsf@red.stonehenge.com> <5563A6E0.4010402@columbus.rr.com> <86382kgoi8.fsf@red.stonehenge.com> <20150526030812.8e749982.freebsd@edvax.de> <20150526034748.GA1674@WorkBox.Home> <5564E1CE.2040700@columbus.rr.com> <5564E6F5.1090306@radel.com> <5564EF07.2080603@columbus.rr.com> <20150527000713.GA3257@WorkBox.Home> <CADqw_g+rHfZCC4oDRLZYHjYO5BNTTgaejU53062Qmfx8cefO9Q@mail.gmail.com> <SNT146-W323F8A94EFA6EA618FBD27A1CB0@phx.gbl> <55661AA5.9030403@columbus.rr.com> <55662C35.4000802@radel.com>

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Yep it should work but is rather pointless, as a 3 way mirror would be far
simpler and probably better performing


On 27 May 2015 at 21:42, Jon Radel <jon@radel.com> wrote:

> On 5/27/15 3:27 PM, Baho Utot wrote:
>
>>
>> I do understand how ZFS works I am using it (ZFS RAID-Z1) on three boxen
>> but not as the root file system.
>>
>>
>>  <snip>
>
>>
>> You cannot do RAID-Z2 with three drives only as RAID-Z2 has two parity
>> drives
>>
> You either contradict yourself or you have a shaky understanding of the
> word "cannot".  Not recommended, quite possibly not the best way to use 3
> disks, sure....    Cannot, well, not so much.
>
> Personally, I think this discussion might have gotten off to a much better
> start if you'd started out by telling us that you couldn't use the
> installer because you weren't in a position to use your entire disks; all
> of which is entirely absent in your initial mail.
>
> Several people have now given you links to various cookbooks for doing
> what I understand you want to do, or more precisely, as close as anything
> published is likely to be to meeting your exact needs. Pick one and see how
> it goes.  I'd suggest really good backups first.
>
> --Jon Radel
> jon@radel.com
>
>



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