PC Configuration for Hi-temp environment

Hi, (there may be more ways to solve this, but) we moved the actual computer to an air-conditioned location and connected the keyboard, mouse, and monitor with a kvm "extender" (or a 1-port kvm switch). There are many of these, including some that use cat5 wiring to put the cpu at a considerable distance from the user. Another suggestion would be to use either an enclosure (or rack) with cooling or to adapt a "spot cooler" to cool just the cpu. Something else (that I've never tried) would be a water-cooling kit that as sold to "gamers" for overclocking the cpu. those are supposed to dissipate the heat very well, although I don't know how well they would hold up in an industrial setting. None of these are "cheap", but then neither is replacing drives! Good luck.

Use as large a case as you can to prevent heat buildup inside the case.

Install the drives with an open bay above and below each drive.

And / or, install the hard drives in vented 5 1/4" drive bay adapters.
I have a couple from Antec that are designed to give you an extra HDD mount with USB ports, and have a vent panel on the front.

Install hard drive coolers on all hard drives.

Use the slowest drives you can find.
5400 RPM drives run a lot cooler than 7200 RPM drives.

Set the drive mode in BIOS settings to 1 or 2 steps slower than the drive supports.

Look at how the PCs are used. It may make sense to set the drives to spin down after 5 minutes.

Force a lot of room air into the case using filtered input fans.
I normally recommend that the inlet fans have 10 percent more air flow than the outlet fans. In you case, i would recommend 20 or 30 percent more air flow.

Depending on your environment, several companies make cabinet coolers.
These are basically small capacity air conditioners designed for cooling 19" rack systems.
One manufacture is Noren

Chas

Thank you for the suggestions. I'll look into these options and see which is most appropriate for us.

Thanks again!