Dell has added a large batch of energy-conscious features to the rack enclosures used for supporting its servers and storage systems. The new PowerEdge 4220 and 2420 rack enclosures are geared to use in any environment, ranging from wiring closets to data centers. For one thing, the new rack enclosures are deeper than previous racks, leaving more space for hot air to move out of the rack. The new racks also add 80 percent front-and-read-door perforation, aimed at improving efficiency by lowering the cold air restraint to the server.

Also new in the PowerEdge 4220 and 2420 racks are flexible rear and side-rack power distribution unit (PDU) options, for easier access to power outlets within the rack. New cable management options such as adjustable cable rings and removable tail-bars at the top and bottom of the back frame are available for simplified power and cable routing. For security, Dell is providing optional stabilizer bars for attaching the rack to the floor and "ganging kits" for bolting adjacent racks to each other. The 4220 rack has a static load rating of 2,500 pounds, while the 2420 has a static load rating of 1,500 pounds, Dell said in a statement.