No, the 8350 is a much smaller machine.  I'm sure it does have
airflow sensors in there somewhere, but it's a single-chassis box
that's the same as the original 8200 came in (BA32?)...It's a 10.5"
tall unit that can be taken out of whatever rack it's in and put into
any other 19" rack and plugged into a power strip like the rest of us
do. ;)  Its blowers are powered internally by the same power
cable...it's completely stand-alone.

  That three-phase business, though...I think it's not three-phase,
but just 220V (actually two-phase, two hots and a neutral)...If the
power connector has three blades, it's one of these.  If it's labeled,
it should say "L6-30".

  But again you don't need to use that power distribution unit.  You
can just use the standard 110v power connector on the end of the cable
coming out of the processor chassis itself.

              -Dave McGuire

On June 24, James Lothian wrote:
> I seem to remember some suggestion that the fans are powered directly 
> off the 3-phase supply, but I could be wrong. There's almost certainly
> some kind of interlock to prevent the rest of the machine from powering
> up if there's no airflow -- certainly the 750 has such a safety feature.
> 
> James
> 
> markus wrote:
> > 
> > > > I've been trying to get console on my VAX8350 to no avail *sigh* I've
> > been
> > > > made aware that I may potentially need some sort of console boot media
> > for
> > > > the RX50 drive on it. I've got the proper cabling and terminal/settings
> > etc
> > > > etc, but still do not get a prompt. There is power going into the main
> > bus
> > > > as there are three lights that light up inside the main box but none of
> > the
> > > > modules power up nor do the fans. I believe you must get console and
> > then
> > > > type in either 'boot' or 'start' to give juice to the other components.
> > If
> > > > anybody can give a general description of the boot process of one of
> > these
> > > > machines, in addition to any pointers it would be appreciated.
> > > >
> > > Well, when you apply power to your machine, the fans should start
> > > immediately and you shall get a '>>>' on your master console.
> > > If you do not; then you have a hardware problem somewhere.
> > 
> > NOTE: I am plugging the main unit into the wall directly using its standard
> > 115V plug, not into the phase3 supply and then into the wall. should the
> > fans and modules operate under these circumstances?