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From: Malcolm Kay <malcolm.kay@internode.on.net>
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To: Chuck McManis <cmcmanis@mcmanis.com>,
	freebsd-questions@freebsd.org
Date: Thu, 4 Mar 2004 19:43:27 +1030
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cc: Stefan Cars <stefan@snowfall.se>
Subject: Re: 1 processor vs. 2
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On Thu, 4 Mar 2004 05:09, Chuck McManis wrote:
> At 05:53 AM 3/3/2004, Danny Pansters wrote:
> >RAID5 on 3 disks? That's useless.
>
> Its only mostly useless. You can't mirror (RAID-1) three drives, so if =
you
> want some resiliency you can use RAID-5 and give up one disk to parity =
and
> get two disks worth of data.

You can certainly run RAID-1 across 3 disks leading to three copies of da=
ta and
still a pretty solid system after one goes down. However I'm not sure if =
it is
valid to call it a mirror system ;-)

Malcolm

> You could even do RAID4 on three disks. 'course 4 disks is generally th=
e
> minimum most people talk about, but its not completely useless.
>
> --Chuck
>
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