DellDell PowerEdge R810 Technical Guide 52*Adapter brackets are available from RackSolutions that allow the R810 sliding rails to mount in threadedracks. The only option available for 2-post racks is to mount the system on a fixed shelf.Other factors to consider when deploying the R810 include the spacing between the front and rearmounting flanges of the rack, the type and location of any equipment mounted in the back of therack such as power distribution units (PDUs), and the overall depth of the rack. For example, use ofthe CMA requires racks that are a minimum of 1m in depth with the PDUs or other rack accessoriespositioned on the sides or rear of the rack away from the CMA.Rail Adjustability Range (mm) Rail Depth(mm)Square Round Threaded withoutCMAwithCMAMin Max Min Max Min Max686 883 672 876 - - 755 883Note: The min-max values listed above represent the allowable distance between the front and rearmounting flanges in the rack. Rail depth without the CMA represents the minimum depth of the railwith the outer CMA brackets removed (as measured from the front mounting flanges of the rack).14.3 90BCable Management Arm (CMA)The optional cable management arm (CMA) for the R810 organizes and secures the cords and cablesexiting the back of the server and unfolds to allow the server to extend out of the rack withouthaving to detach the cables. Some key features of the R810 CMA include: Large U-shaped baskets to support dense cable loads Open vent pattern for optimal airflow Fully reversible (can be mounted on either side) with no conversion required Utilizes hook-and-loop straps rather than plastic tie wraps to eliminate the risk of cabledamage during cycling Includes a low-profile fixed tray to both support and retain the CMA in its fully closed position Both the CMA and the tray mount without the use of tools via simple and intuitive snap-indesigns14.4 91BRack ViewThe R810 ReadyRails sliding rails are a ―drop-in‖ design, meaning that the system is installedvertically into the rails by inserting the shoulder nuts on the sides of the system into the J-slots inthe inner rail members with the rails in the fully extended position.