linux-kernel - Re: limits on raid

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Date:	Mon, 18 Jun 2007 17:46:33 -0400
From:	Wakko Warner <wakko@...mx.eu.org>
To:	david@...g.hm
Cc:	Brendan Conoboy <blc@...hat.com>,
	Lennart Sorensen <lsorense@...lub.uwaterloo.ca>,
	Neil Brown <neilb@...e.de>, linux-kernel@...r.kernel.org,
	linux-raid@...r.kernel.org
Subject: Re: limits on raid

david@...g.hm wrote:
> On Mon, 18 Jun 2007, Brendan Conoboy wrote:
> 
> >david@...g.hm wrote:
> >> yes, sorry, ultra 320 wide.
> >
> >Exactly how many channels and drives?
> 
> one channel, 2 OS drives plus the 45 drives in the array.

Given that the drives only have 4 ID bits, how can you have 47 drives on 1
cable?  You'd need a minimum of 3 channels for 47 drives.  Do you have some
sort of external box that holds X number of drives and only uses a single
ID?

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