what is rack?
A rack, in an IT (information technology) context, is a supporting framework that holds hardware modules. In this context, racks typically contain servers, hard disk drives and other computing equipment. Racks make it possible to contain a lot of equipment in a small physical footprint without requiring shelving. The standard size for racks is nineteen inches across, although the ETSI (European Telecommunications Standards Institute) standard is 23â. Nineteen inch racks are typically 73.5 inches high.