[Hidden-tech] VM MS-Windows 7 upgrade: necessary or worth bothering?

[Matthew Crocker]

I wouldn't touch it,  older java apps break on newer java.

You could always spin up a new VM and see if you can get an updated control program from Johnson controls

Replace it with an Arduino

On 1/15/20, 6:57 PM, "Hidden-discuss on behalf of Robert Heller via Hidden-discuss" <hidden-discuss-bounces at lists.hidden-tech.net on behalf of hidden-discuss at lists.hidden-tech.net> wrote:

    At the Wendell Free Library we have a 99.9% Linux shop. We have 1 virtual
    machine that runs MS-Windows 7 (happens to be a 32-bit install, although the
    server is 64-bit). This VM is used (two times a year) for one thing only: to
    run a Java program that talks to the heating system to change it from summer
    mode to winter mode and back again. It is a Johnson Controls system. No other
    applications are ever run on it, just the one Java program (which as far as I
    can tell only runs under MS-Windows, despite being written in Java).
    
    Is it worth the trouble to upgrade this VM?  I have no clue if the Java 
    program will even run under MS-Windows 10, and I suspect if we want to run a 
    newer version of the Java application, we would need to have Johnson Controls 
    upgrade the firmware in the HVAC, which would probably cost $3,000 or some 
    such (that is what it cost when we had things upgraded from the MS-Windows XP 
    version...).  It might actually be cheaper to replace the HVAC control 
    system with something *other* than Johnson Controls.  Eg pull the Johnson 
    Controls "box" and replace it with a Raspberry Pi or something.
    
    
    -- 
    Robert Heller             -- 978-544-6933 Cell: 413-658-7953
    Deepwoods Software        -- Custom Software Services
    http://www.deepsoft.com/  -- Linux Administration Services
    heller at deepsoft.com       -- Webhosting Services
                                                                                                                               
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