[rescue] FreeBSD and ZFS, was Re: 3ware raid

Zachary Giles zgiles at gmail.com
Wed Jul 27 16:04:19 CDT 2011

Well, I've done whole-single-disk-lv's before with Dell Perc
controllers.. I don't like that. It seems the 3ware JBOD mode is
actually what it says.. a JBOD. It even disabled the onboard Cache,
which may or maynot be a good thing. I'd prefer an even-more-JBOD
controller, but I think it's "OK" as far as one goes, besides not
being supported in OpenSolaris.

On Wed, Jul 27, 2011 at 1:57 PM, Phil Stracchino <alaric at metrocast.net>
> On 07/27/11 16:43, Zachary Giles wrote:
>> Yeah, ZFS with drives using 3ware controllers. Do note, I'm not doing
>> it the "dumb" way where I make a raid and then ZFS on top of that. The
>> 3ware controllers have JBOD mode that turns all the "hardware" raid
>> off.
> Except that 3Ware JBOD mode is not *PRECISELY* JBOD.  It's closer to "a
> bunch of whole-single-disk logical volumes".
> Whether the distinction matters to ZFS, I don't know.
> --
>  Phil Stracchino, CDK#2     DoD#299792458     ICBM: 43.5607, -71.355
>  alaric at caerllewys.net   alaric at metrocast.net   phil at co.ordinate.org
>  Renaissance Man, Unix ronin, Perl hacker, SQL wrangler, Free Stater
>                 It's not the years, it's the mileage.
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Zach Giles
zgiles at gmail.com

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