Abstract: A bar to be used in a storage rack system is provided for the dual storage of computer tape reels and/or computer tape packs. The storage rack system has a series of bars arranged in rows and columns. The storage rack system has flexibility in that the bars are of one uniform design such that computer tape reels and packs can be stored simultaneously in one system.

Abstract: A modular storage system permits access to elevated shelves. A plurality of multishelved racks are movable together and apart on rollers or wheels in a room. Each rack includes a number of shelf stacks. Side-by-side stacks are interconnected so that the rack extends in a direction perpendicular to its direction of movement. Supported by wall of the room are plural catwalks which pass between adjacent shelves of each stack in each rack. The catwalks permit a person standing thereon to gain access to shelves above the catwalk. Selected racks may include facilities for supporting the catwalks without hindering rack movement.