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Date:      Tue, 23 Jan 2007 10:05:19 -0500
From:      Jerry McAllister <jerrymc@msu.edu>
To:        Damian Wiest <dwiest@vailsys.com>
Cc:        Steve Franks <stevefranks@ieee.org>, FreeBSD Users Questions <freebsd-questions@freebsd.org>
Subject:   Re: hardware mirrors recognized as individual disks in fbsd
Message-ID:  <20070123150519.GA15419@gizmo.acns.msu.edu>
In-Reply-To: <20070123073506.GB6053@dfwdamian.vail>
References:  <539c60b90701161033v5e316ef4m19332bd6e86ab67b@mail.gmail.com> <20070123011659.GD22569@dfwdamian.vail> <20070123073506.GB6053@dfwdamian.vail>

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On Tue, Jan 23, 2007 at 01:35:06AM -0600, Damian Wiest wrote:

> On Mon, Jan 22, 2007 at 07:16:59PM -0600, Damian Wiest wrote:
> 
> [snip]
> 
> > Real hardware RAID chips/cards tend to be expensive, 
> > proprietary, don't require an OS driver and include a battery backup
> > system for data in the RAID cache should the system lose power.
> 
> I don't know what I was thinking, of course the hardware RAID systems
> require drivers.

Of course, what you meant to say was that they don't require an 
OS raid utility to zip the raid together.   They look like a 
single hardware device and the driver must just be for that device
sort of like any other device.

////jerry

> 
> -Damian
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