[Info-vax] Dave Cutler, Prism, DEC, Microsoft, etc.

[JF Mezei]

DaveG wrote:

> We had a 9000.  It was air cooled.

Knowing how Digital didn't do things "simple", it could have been a
system made up of a internal water loop to cool the electronics,  a
freon compressor with a water-freon heat exchange at one end, and a
freon-air exchanger at the other , along with fans that drew cool
outside air through the exchanger and exausted warm air out.

So, to the end user, it looks, acts and feels like air cooled, but to
the engineers, they still retained their water cooled electronics deep
inside the machine.

And if you're only going to build a handful of VAX 9000s, it would cost
less to add that freon compressor than to redesign the water cooled
electronics.

There are precedents for freon compressors in Digital cabinets:

http://toyvax.glendale.ca.us/~vance/vaxbar.html



:-) :-) :-) :-) :-) :-) :-)


Seriously though, how many VAX9000s were sold ?