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Date:      Sun, 8 Jan 2012 17:38:42 +0000
From:      krad <kraduk@gmail.com>
To:        Randy Bush <randy@psg.com>
Cc:        FreeBSD FS <freebsd-fs@freebsd.org>
Subject:   Re: zfs with a bunch of drives
Message-ID:  <CALfReycTyL_VXJNrOzvax5SB7gk-R2PAkd5OMWn4RyDNM=0tKA@mail.gmail.com>
In-Reply-To: <m2fwfqur1c.wl%randy@psg.com>
References:  <m2fwfqur1c.wl%randy@psg.com>

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On 8 January 2012 15:56, Randy Bush <randy@psg.com> wrote:

> we want to build a new 16-drive RELENG_9 server on which we intend to
> run a bunch of vboxen.  a couple of years ago, we built a 16-drive
> server.  based on advice here not to just do a big raidz, it was
> configured as eight mirrors
>
>        tank                ONLINE       0     0     0
>          mirror            ONLINE       0     0     0
>            label/m00-d01   ONLINE       0     0     0
>            label/m00-d00   ONLINE       0     0     0
>          mirror            ONLINE       0     0     0
>            label/m01-d00   ONLINE       0     0     0
>            label/m01-d01   ONLINE       0     0     0
>
> and so forth.  is this still the best advice for performance?
>
> and is there a url for building a bootable RELENG_9 zfs-only system?
> last i looked there were a half dozen all somewhat different.
>
> thanks for clue.
>
> randy
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striping mirrors will be fast but wasteful on space. two groups of raidz2
would be nice but slightly slower depends whats more important to you
though



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