From owner-freebsd-hardware  Fri Aug 24 15:34: 8 2001
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From: "Kory Hamzeh" <kory@avatar.com>
To: "Bryan-TheBS-Smith" <b.j.smith@ieee.org>
Cc: <freebsd-hardware@FreeBSD.ORG>
Subject: RE: Adding 3ware RAID AFTER FBSD has been installed
Date: Fri, 24 Aug 2001 15:33:45 -0700
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> > Did you mean to say "3ware" is another solution or where
> > you thinking about another controller?
>
> I meant that like the ARCO (which I have never used, so I can only
> assume), the 3Ware card is a true hardware RAID solution.  It
> completely separates the rest of the system from the ATA drives --
> the microcontroller handles all conversations between them.
>
> > It seems that I can NOT add 3ware to an existing system.
> > I don't think I can even run vinum at this point.
>
> Then your OS isn't loading the 3Ware driver I assume?

What I'm trying to say is that the ARCO can be installed in a system that is
already configured with an operating system since it is transparent and does
not change the drive geometry (it only supports RAID 1). The 3ware, on the
other hand, must be installed before you install the OS. If the ARCO had
3ware's TwinStore technology (splitting a read request into two parallel
reads on different drives), I'd be using it right now.

Thanks,
Kory


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