adobe machine room?

This discussion of 3-phase power and VAXen in your home and the big Amdahl machine transport has reminded me again of my desire to have some sort of controlled environment for my big SGI boxes. I have a rather large lot and I considered building a Henk style machine room on my property attached to the back of the garage. My idea was to build a machine room adjacent to the garage and have a large set of doors put on the back of the garage so that equipment would be loaded/unloaded through the garage into the machine room. However, it gets pretty frosty in winter time here and pretty toasty in summer time. (I'm in Salt Lake City, UT.) Recently there was some program on TV touting the benefit of adobe construction for its high insulating value and keeping a relatively constant indoor temperature with little to no active heating or cooling. That got me to thinking that if you built a machine room with an adobe exterior, then you'd only need AC equipment to compensate for heat generated by the machines themselves and wouldn't need to worry much about the seasons. Any thoughts on this? Note that I'm not suggesting going without any active cooling, just wondering if adobe construction would lower the bills and make the necessary cooling equipment smaller. -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://blogs.xmission.com/legalize/>