Triffid wrote:

> Will heat be an issue if I run 4x75s in SS20s? Solutions?

Someone else has said they will run too hot, and I can well believe
that, although with attention to cooling, you might be okay. I would not
like to say for sure.

However, if you are willing to remove the side panels, you can get a lot
better cooling. I believe there is a special side panel made, with extra
wide slots to allow more cooling air. I have 5 SS20's and one definitely
has wider slots, allowing more air flow. I think if you look on the Sun
hardware site, you will find it has another part number. I'm not
suggesting you buy one of course, but just mentioning that there is a
way to improve airflow. The easiest is to remove the panel, which lowers
the air restriction.

I wrote some notes on cooling of SS20's here. Might be worth a read - at
the minute the page is not linked from anywhere, so you probably wont
find in with google.

http://www.g8wrb.org/useful-stuff/Su...ARCstation-20/

BTW, if you have a pile of SS20's, and they don't all have the sbus
slots covers on (often they are missing on old machines), watch where
you store them. I had such a machine in my garage, which the mice seem
to like in the winter. One of more of them decided to use the SS20 as a
toilet!!! I tried carefully cleaning the motherboard, but without being
able to get it to work. So I tried more vigorous cleaning, again without
success. So finally I removed everything from the chassis (except the
motherboard), and dumped the whole thing into the bath and went at it
quite vigorously with a tooth brush. Much to my surprise, it then
worked. So I am very careful about storing SS20's in my garage - I make
sure there is no way for little mice to use it as a toilet again.