From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Richard B. Johnson" <root@chaos.analogic.com>
Date: Fri, 11 Apr 2003 20:39:26 +0000
Subject: Re: [ANNOUNCE] udev 0.1 release
Message-Id: <marc-linux-hotplug-105009345528490@msgid-missing>
List-Id: <linux-hotplug.vger.kernel.org>
References: <marc-linux-hotplug-105003172531462@msgid-missing>
In-Reply-To: <marc-linux-hotplug-105003172531462@msgid-missing>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: linux-hotplug@vger.kernel.org

On Fri, 11 Apr 2003, John Bradford wrote:

> > > Every three-connection connector supplies power to two drives.
> > >
> > >      |--------D1
> > > -----|--------D2    ________D3
> > >      |______________|_______D4
> > >                     |_______Continue
> > Here's the way I thought of it.
> >
> >                      |--x -- 3
> >        |--------X----|--x -- 3
> >        |             |--x -- 3
> >        |
> >        |             |--x -- 3
> > -------|--------X----|--x -- 3
> >        |             |--x -- 3
> >        |
> >        |             |--x -- 3
> >        |--------X----|--x -- 3
> >                      |--x -- 3
> >
> > I now have 1 + 3 + 9 = 13 splitters, giving me 27 connections, out of 1.
> > etc, etc. Same numbers I'd have doing it your way, yours would be 13
> > levels deep instead.
> >
> > I think I just went for the massively parallel method of hooking
> > these up and from there got massively lost.
>
> Now, assuming a voltage drop of 0.05V across each cable...
>
> :-)
>
> John.
>

Also the 1 ampere that each of drives take on the 12-volt line
that's 4000 amperes for 4000 drives. You need 8 parallel wires
of AWG #00 to handle that current.... and you need to get rid
of 4,000 * 12 = 48,000 watts of heat ;^


Cheers,
Dick Johnson
Penguin : Linux version 2.4.20 on an i686 machine (797.90 BogoMips).
Why is the government concerned about the lunatic fringe? Think about it.



-------------------------------------------------------
This SF.net email is sponsored by: Etnus, makers of TotalView, The debugger 
for complex code. Debugging C/C++ programs can leave you feeling lost and 
disoriented. TotalView can help you find your way. Available on major UNIX 
and Linux platforms. Try it free. www.etnus.com
_______________________________________________
Linux-hotplug-devel mailing list  http://linux-hotplug.sourceforge.net
Linux-hotplug-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-hotplug-devel