A technician finds a pile of cables hanging straight down off the back of several servers. This is preventing the technician from pulling the server out of the rack for maintenance. Which of the…

Rail kits allow the server chassis to slide in and out of the rack but provide no mechanism to manage or secure the cables attached to the rear of the server.

Hook and loop fasteners bundle cables together neatly but do not allow the cable bundle to flex or extend when the server is pulled out, which would still obstruct maintenance.

Cable management arms attach to the rear of rack-mounted servers and use hinged or telescoping sections to organize cables in a way that flexes as the server is extended on its rails. This prevents cables from hanging loose or pulling tight when the server is pulled forward, allowing technicians to perform maintenance without obstruction. Proper use of CMAs is a data center best practice for any rack-mounted equipment that requires periodic access.

Power distribution units distribute power to rack equipment but have no role in organizing or managing patch cables or data cables.