[gavanm]

In the mid-90's, I worked at a place that had one used for our intranet server running Win NT with IIS.

Mostly used a DEC Alpha as a "visible" competitor to our major server provider at the time (Compaq) to try and manage the prices they were charging (at least until Compaq bought Digital, and then eventually bought by/merged with HP).

One interesting thing was that we had a faulty RAM chip that we only discovered due to a bug in website publishing to IIS causing a big memory leak which crashed the server. Once the the chip was replaced, we still had the underlying leak - but at least the server didn't crash any more.