Message-Id: <200308291513.h7TFD8GG003209@turing-police.cc.vt.edu>
To: Nick Urbanik <nicku@vtc.edu.hk>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Single P4, many IDE PCI cards == trouble?? 
In-Reply-To: Your message of "Fri, 29 Aug 2003 22:00:58 +0800."
             <3F4F5C9A.5BAA1542@vtc.edu.hk> 
From: Valdis.Kletnieks@vt.edu
References: <3F4EA30C.CEA49F2F@vtc.edu.hk> <1062150643.26753.4.camel@dhcp23.swansea.linux.org.uk>
            <3F4F5C9A.5BAA1542@vtc.edu.hk>
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On Fri, 29 Aug 2003 22:00:58 +0800, Nick Urbanik said:

> what motherboard, IDE cards you are using.  I used to imagine that a
> terabyte of RAID storage on one P4 machine with ordinary cheap IDE cards
> with software RAID would be feasible.  I believe it is not (although I
> cannot afford to play musical motherboards).
...
> I am giving up now, and have shelled out big dollars for a 3ware 7506-8,
> which I will install early next week once I've figured out how to back up
> and restore 203GB without shelling out even more money.

Exactly.  The *real* reason why a terabyte of RAID is expensive - if it's
important enough to RAID, it's important enough to back up (with the possible
exception of RAID striping for performance on a multi-hundred-gig scratch
space).

/Valdis (who once got to clean up 600M of mess after a busticated RAID
controller dropped its cache to the right blocks on the wrong disks :)

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