The Google data center is not filled with super expensive high tech brand name gear such as Sun, Dell, or Microsoft Exchange. Instead, Google has a large farm of sleek and stripped PCs with the motherboards circuit screwed onto a plain metal slab, with each hard drive attached to the contraptions by a plain old Velcro strap. There are 15000 Google computers, as described above, in the Google farm. The Google farm of computers is growing at the rate of 1500 new machines a month. These super fast machines have RAM in the gigabytes, spanking fast hard drives, and they are running Linux -- one of the best and fastest free operating systems.