Cable Management Arm (Cma); Rack View; Rack Types Supported; Rail Adjustability Range And Depth - Dell PowerEdge R910 Technical Manual

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Dell
Rail
Identifier
B2
*Adapter brackets are available from Rack Solutions that allow the R910
sliding rails to mount in threaded racks. The only option available for 2-
post racks is to mount the system on a fixed shelf.
Other factors to consider when deploying the R910 include the spacing between the front and back
mounting flanges of the rack, the type and location of any equipment mounted in the back of the
rack such as power distribution units (PDUs), and the overall depth of the rack. For example, use of
the CMA requires racks that are a minimum of 1m in depth with the PDUs or other rack accessories
positioned on the sides or back of the rack away from the CMA.
The min-max values listed above represent the allowable distance between the front and back
mounting flanges in the rack. Rail depth without the CMA represents the minimum depth of the rail
with the outer CMA brackets removed (as measured from the front mounting flanges of the rack).

14.3 Cable Management Arm (CMA)

The optional cable management arm (CMA) for the R910 organizes and secures the cords and cables
exiting the back of the server and unfolds to allow the server to extend out of the rack without
having to detach the cables. Some key features of the R910 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 cable
damage 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-in
designs

14.4 Rack View

The R910 ReadyRails sliding rails are a "drop-in" design, meaning that the system is installed
vertically into the rails by inserting the shoulder nuts on the sides of the system into the J-slots in
the inner rail members with the rails in the fully extended position.
Dell PowerEdge R910 Technical Guide

Rack Types Supported

Table 15.
Mounting
Rail
Interface
Type
ReadyRails™
Sliding

Rail Adjustability Range and Depth

Table 16.
Rail Adjustability Range (mm)
Square
Round
Min
Max
Min
Max
686
883
672
876
Rack Types Supported
4-Post
Square
Round
Thread
X
Rail Depth (mm)
Threaded
Without
CMA
Min
Max
755
2-Post
Flush
Center
X
X
With
CMA
883
42

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