[SUMMARY:Mix 4.1 & 4.1.1?

From: David Pentland (dave@computer-studies.napier.ac.uk)
Date: Tue Mar 19 1991 - 14:07:23 CST

My original question:

> Subject: Can I mix 4.1 & 4.1.1?
> To: sun-managers@uk.ac.napier.computer-studies
> Organisation: Napier Polytechnic of Edinburgh, Dept of Computer Studies
> Sender: sun-managers-request@uk.ac.nsfnet-relay
> Status: RO
> I have suddenly been faced with the proposition of upgrading ONE of
> our three Sun 4/360s from 4.1 to 4.1.1 in order to add some large (1.3Gb)
> disks which we are told cannot be used under 4.1 (driver limitations?)
> I think I read a similar question to this recently on sun-managers
> but unfortunately failed to save it, so I appologise if this is a repeated
> question:
> Can I mix filservers running OS4.1 and 4.1.1 on the same net, and
> will each be able to access these new disks?
---- End of forwarded text ----

Everyone says "yes" - there should be no problems.

One 'querk' was noted however:

From: kaul@edu.ohio-state.eng.icarus (Rich Kaul)
Message-Id: <9103190303.AA01530@icarus.eng.ohio-state.edu>

Yes. We do it here. The only thing that you will note is warnings
when programs compiled on the 4.1.1 machines are run on the 4.1
machines. The warnings are simply that "lib{whatever} is out of
date". If you don't like those warnings simply make sure that you
compile everything on the 4.1 systems. We haven't had a lick of
trouble with that.


Thank you one and all. This has put my mind at rest as I only have a few
days to upgrade before a course starts and I know from bitter experience
how the simplist upgrade tasks which are expected to take hours can turn
into days of problems.

        Dave - Napier Polytechnic, Edinburgh.

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