[Search for users] [Overall Top Noters] [List of all Conferences] [Download this site]

Conference turris::digital_unix

Title:DIGITAL UNIX(FORMERLY KNOWN AS DEC OSF/1)
Notice:Welcome to the Digital UNIX Conference
Moderator:SMURF::DENHAM
Created:Thu Mar 16 1995
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:10068
Total number of notes:35879

9475.0. "Backward compatibility of Firmware and OS?" by ALFAM7::STREPPEL () Fri Apr 11 1997 11:49

    A customer needs the following guarantee. Once they installed a Digital
    UNIX system and their application it should be untouched for 15(!) years. 
    No software or hardware  upgrades. Now:
    
    Can we guarantee that, in case field service has to swap any hardware
    component during that time with - maybe - new firmware, Digital UNIX 
    and all user level applications continue to run like before?
    
    In other words: Do we guarantee new firmware will not break
    compatibility with the OS?
    
    	Regards
    		Hartmut
T.RTitleUserPersonal
Name
DateLines
9475.1No outside communicationQUARRY::reevesJon Reeves, UNIX compiler groupFri Apr 11 1997 15:376
I assume this system will not be connected to any networks -- because
network protocols change (there's a chance IPV4 will be obsolete in 15 years)
and network-resident crackers are always finding new security holes.

You'll want to be sure it's running at least PTmin, as that's the first
Y2K compliant release.
9475.2TLE::REAGANAll of this chaos makes perfect senseFri Apr 11 1997 16:3216
    There have been cases where older version of the software didn't like
    newer firmware.  So I suppose 10 years from now you might swap out a
    board with newer firmware and not be able to boot the machine.
    
    Jon hit about another problem in .1 that people have only begun to realize.
    Namely "bit rot".  This time, it is the Y2K problem.  Who knows what it
    will be next.
    
    People have assumed over the years that if you take a piece of working
    hardware/software today and stick it in a lab and never add new
    hardware and never add new software, that the current config will
    run forever.  We now see with the Y2K situation that as time goes
    by, latent bugs in software bubble up to the top like frost heaves
    in New England.
    
    				-John
9475.3LEXS01::GINGERRon GingerMon Apr 14 1997 14:118
    In general I agree that it is unlikely a system will still be
    supportable in 15 years, but there are a lot of applications where this
    works. I replaced a PDP-11 a couple years ago that had been in place
    and running the same application for over 10 years. I was also told
    that the people mover train in Morgantown WV was still running on the
    PDP-11 system that I helped configure in 1971.
    
    Not everyone needs to run the latest whiz-bang app.
9475.4So, no gurantee, right??ALFAM7::STREPPELMon Apr 14 1997 16:365
    So the end of the story is: Although our intent is to be compatible
    with new firmware  we cannot or at least do not want to give
    this guarantee, correct??
    
    	Hartmut
9475.5Wrong forum?WTFN::SCALESDespair is appropriate and inevitable.Mon Apr 14 1997 17:4712
Hartmut,

I suspect that this conference is generally only read by a handful of technical
folks from Engineering.  We are not in any position to offer or confirm business
guarantees.

Thus, if you want something like this for your customer, I think you need to
contact project management and/or engineering management -- only they would be
able to extend a commitment for this kind of support...


				Webb
9475.6TANSTAAFLBBPBV1::WALLACEjohn wallace @ bbp. +44 860 675093Tue Apr 15 1997 14:367
    And typically for this kind of support, $$$ are involved. E.g. to pay
    for hardware, a warehouse, and a person to manage it...
    
    COTS prices implies COTS level of service.
    
    regards
    john
9475.7Prior Version Support?DSNENG::SPRATTEEweKnicks - Woolly SoftwareTue Apr 15 1997 22:214
DIGITAL offers "Prior Version Support", or something like that, for at least
OpenVMS.  There are customers running VMS V4.7 and paying us a lot of money
to keep it running.  This type of support involves providing the bits to 
run old software on new hardware, e.g., running VMS V4.7 on a VAX 7000.