since there is no air conditioning, you don't have a condensation problem
No, it's not HVAC induced condensation. Meteorologists call it the dew point.
Right at this moment, the temp is 53.3F with a relative humidity of 78%. The dew point is 47F.
You're suppose to run a datacenter between 40% to 60% relative humidity. Without a system in place to dry the air, they're asking for corrosion on parts.
You can't say computers are corrosion proof either. When I worked in a computer store, we had computers come in all the time that were in houses with no HVAC, so they were exposed to outdoor humidity.
I left some old gear in a friends garage for a while. One of the units was a used Catalyst 5000, with cards I didn't really care about. When I put it in the garage, it was in functional condition.
I decided to bring it back up to play with. There was corrosion on the line card handles, and I'm sure corrosion inside. Nothing looked bright and clean. There was visible corrosion on the cat5 pins (for the cat5 ports). When I took it out, it barely worked with lots of errors. Reseating the cards didn't help at all. I don't know (or care) which parts went bad, I sent it off for electronic scrap recycling.
Someone's going to be really pissed off when they spent a fortune on servers that have to be trashed because they stop working properly.
There are other parts machines in the garage too. I only go to them for fans, power supplies, etc. I had already pulled out all the memory and CPUs. Sometimes they still work. Sometimes they don't.
Specs have some wild numbers on them. Some say they operate in 10% to 90% humidity. Sure, they *can* run in it for a while. They aren't expected to survive in that kind of temperature indefinitely. I've seen some specs that say they'll operate over 120F. Sure, for a very short time. I had one place argue with me because the spec showed wild numbers, but they were already experiencing hardware failures for operating servers in an uncooled server room (the HVAC broke, and they didn't want to fix it).