[SunRescue] Heat issues with older suns

[Chris Drelich]

Alright.  Thanks for the info.  I got my 2 Sun4/630s, my Sun3/260, and my VAX
cluster doing plenty of heating right now.  :)
Chris

BSD Bob wrote:
> 
> > I have a few older desktop/pizza box style suns(Sun2/50, Sun3/50, Sun3/60),
> > which seem to for the most part have their fans on the bottom of the system.
> > What is a good way to store these systems when they run?  If they are setup in
> > standard desktop fashion, will they overheat after a few days running like
> > this?  Is it okay to stack them on top of each other, can they cool themselves
> > properly this way?  Im just concerned about these systems due to the age of
> > them.  Also, I noticed that most sun picture archives don't have many photos
> > of the Sun2s.  If I can borrow my friend's digital camera, would anyone have
> > interest in these pictures?
> 
> Well, from my experiences, de-dustbunnie them well, and if more air is needed,
> prop them up on corks or strips of 2x2 stock (polished nicely and stained to
> suit, right?....(:+}}...) to increase air flow.  I don't usually leave mine
> on 24/7, so I can't comment on how reliable they may be.  When I do run them,
> they don't seem to get all that hot.  The 511 boxes with the big esdi drives,
> do get hot, though, so they need air flow, too, else yank the esdi drives and
> put in modern scsi things.
> 
> I have run into some fans that are noisy, and need oiling.  Sometimes there
> is a little metal label cover over the center bearing on the fan.  IFF you
> can peel that up, or remove it, you can add a couple of drops of good
> silicon oil or synthetic oil and then it will run quieter.  I do that on
> a lot of my muffin fans, and it doubles their life, and keeps them quiet.
> 
> You might try to mount them vertically with the air flow upward to reduce
> heat load, but make sure there is sufficient space to draw in cool air
> at the bottom.
> 
> If you really want to heat your house in winter, use the 12 slot desksides,
> full up with ram and other cards.  3 of them running in the basement keeps
> it like toast even in winter.
> 
> That is all I can think of....
> 
> Bob
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