Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!hp-pcd!hpfcso!hplabs!hpl-opus!hpnmdla!darrylo
From: darrylo@hpnmdla.hp.com (Darryl Okahata)
Newsgroups: comp.sys.hp
Subject: Re: SNAKE CLUSTER(?)
Message-ID: <430042@hpnmdla.hp.com>
Date: 19 Apr 91 18:44:07 GMT
References: <1991Apr15.204425.8682@ux1.cso.uiuc.edu>
Organization: HP Network Measurements Div, Santa Rosa, CA
Lines: 43

In comp.sys.hp, cag@hpfcso.FC.HP.COM (Craig Gleason) writes:

> >>          can an 835 boot off of a 730?
>
> Sounds like Munir's answer made this a moot point, but I need to set this
> straight. ....

     I've been waiting for someone to post an "authoritative answer",
but I haven't seen one, and so I'll post the following (note that it is
*SECONDHAND* information, which I believe to be correct, but I'm not
sure):

     Currently, you cannot mix 800s with 700s in a diskless cluster.
You *probably* will in the future, but you cannot do so today (*part* of
the reason is that new instructions were added to the 700's instruction
set).  Here is a matrix describing the CURRENT set of possible CPU
combinations (this was copied, without permission, from an HP-internal
newsgroup):

				Servers
	clients         s300/400        s700    s600/800
	  |
	  v
	300/400         yes             yes     yes
	s700            no              yes     no
	s800            no              no      no

(Note that the S800 client/S800 server entry *might* be slightly
incorrect -- I'm under the impression that, while this is generally
true, an 815, and only an 815, can be a diskless client.  Perhaps
someone who knows will clarify this.)

     Please, don't send me any comments -- I'm just passing on some
information, and I have absolutely no connection with the RISC or OS
folks.

     -- Darryl Okahata
	UUCP: {hplabs!, hpcea!, hpfcla!} hpnmd!darrylo
	Internet: darrylo%hpnmd@relay.hp.com

DISCLAIMER: this message is the author's personal opinion and does not
constitute the support, opinion or policy of Hewlett-Packard or of the
little green men that have been following him all day.