Rackmounts for Musicians?

williwilli asks: "Musicians face a multitude of challenges in this day and age, yet there are a number of musicians also trying to work towards the future. One constant challenge in almost any profession in money. With CPU's continuing to advance at a rapid rate, many musicians are finding computer-based software synthesis to be much more cost effective than traditional hardware synthesizers. While some musicians are using portable systems, the lack of expandibility limits the systems capabilities in terms of synthesis, multitrack recording, etc. While one could always throw more computers at the problem, many users will no doubt find a rackmount system provides much more capability and expandibility. As such, what insights might the Slashdot crowd be able to provide towards building your own rack? Is shockmounting necessary? Are parts readily available, or are there any 'open-source' CAD files out there? Are there music-specific materials, designs, or tips to recommend or avoid?" Would rackmounts for a mobile musician really differ so greatly from rackmounts made for a small server cluster?