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Date:      Sat, 26 Jun 1999 18:42:14 +0200 (CEST)
From:      Wilko Bulte <wilko@yedi.iaf.nl>
To:        mjacob@feral.com
Cc:        justin@apple.com, tech-kern@netbsd.org, freebsd-hackers@FreeBSD.ORG
Subject:   Re: System unique identifier.....
Message-ID:  <199906261642.SAA80561@yedi.iaf.nl>
In-Reply-To: <Pine.BSF.4.05.9906260836280.42550-100000@semuta.feral.com> from Matthew Jacob at "Jun 26, 1999  8:38: 9 am"

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As Matthew Jacob wrote ...
> 
> 
> On Sat, 26 Jun 1999, Wilko Bulte wrote:
> 
> > As Matthew Jacob wrote ...
> > > 
> > > Yes, you want the WWN to stay constant. That doesn't mean it should
> > > necessarily be the same physical box. Nor does it mean it should be a
> > > system that comes with a WWN assigned to by the manufacturer.
> > 
> > Manufacturers have to register and 'get' a unique range they can assign
> > to their products. How do you guarantee that your homegrown WWN is
> > really unique?
> 
> Witha a value in the top 4 bits that's not one of the currently defined
> authoritative values.

Not waterproof, at least to WW unique. What stops me from inventing
exactly the same WWN as you do for your machine? Playing the devils
(daemon's?) advocate, I admit..

> > > And to boot a Sun over fibre channel, you use the WWN.
> > 
> > Well, we currently don't support that, but indeed that is what you would
> > do. Tru64 Unix does something similar.
> 
> 
> You can boot off of fibre channel now- but not using a WWN.

Well, "we" is Compaq using a HSG80 FC raidbox on a Sun with a Jaycor
adapter in the Sun.

--
|   / o / /  _  	 Arnhem, The Netherlands	- Powered by FreeBSD -
|/|/ / / /( (_) Bulte 	 WWW  : http://www.tcja.nl 	http://www.freebsd.org


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