1. A method of installing a server rack in a data center, comprising:moving a server rack adjacent a rear restraint assembly that is attached to a support surface of a data center that supports the server rack, the rear restraint assembly comprising at least two lateral members coupled with the rear restraint assembly at a distance apart to receive a width of the server rack;
adjusting a position of a back side of the server rack into one of a plurality of unique positions along the rear restraint assembly so that the server rack is positioned between the at least two lateral members coupled to the rear restraint assembly that extend beyond the rear restraint assembly on sides of the server rack;
engaging either a mating bracket attached to the server rack or a side portion of the server rack with a respective protrusion that extends from each of the lateral members;
positioning a rear portion of the server rack vertically underneath an angled bracket of the rear restraint assembly; and
positioning a front restraint assembly, coupled to the support surface, vertically above a front portion of the server rack.