Dell R515 manual Cable Management Arm CMA, Rail Adjustability Ranges and Depth, Cma

Dell

One key factor in selecting the proper rails is identifying the type of rack in which they will be installed. Both the sliding rails and the static rails support mounting in 19‖-wide, EIA-310-E compliant 4-post racks, but only the static rails, as the more generic or universal solution, support mounting in 2-post (Telco) racks.

Table 21 provides a summary of the rack types supported by the R515 rails.

			Table 21.	Supported Racks
						Rack Types Supported
		Rail	Mounting		Rail
	Product					4-Post			2-Post
		ID	Interface		Type
						Square	Round	Thread	Flush	Center
R515		B3	ReadyRails		Sliding	√	√	√*	X	X
		B4	ReadyRails/Generic		Static	√	√	√	√	√

*Requires the 2U Threaded Rack Adapter Brackets Kit (Dell PN PKCR1)

Screws are not included in the static rail kit due to the fact that threaded racks are offered with a variety of thread designations. Users must provide their own screws when mounting the static rails in threaded or 2- post racks.

Other key factors governing proper rail selection include the spacing between the front and rear 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. See Table 22. Due to their reduced complexity and lack of need for CMA support, the static rails offer a greater adjustability range and an overall smaller footprint than the sliding rails.

Table 22. Rail Adjustability Ranges and Depth

Rail Adjustability Range (mm)

Rail Depth (mm)

Rail

Mounting

Rail

Product

Square

Round

Threaded

without

with

ID

Interface

Type

Min

Max

Min

Max

Min

Max

CMA

CMA

B3

ReadyRails

Sliding

686

883

672

876

651

897

714

845

R515

B4

ReadyRails/

Static

608

879

594

872

604

890

622

N/A

Generic

The adjustment range of the rails is a function of the type of rack in which they are being mounted. The min and max values listed above represent the allowable distance between the front and rear mounting flanges in the rack. Rail depth represents the minimum depth of the rail as measured from the rack front mounting flanges when the rail rear bracket is positioned all the way forward.

13.3 Cable Management Arm (CMA)

The optional cable management arm (CMA) for the R515 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 R515 CMA include:

∙Large U-shaped baskets support dense cable loads.

∙An open-vent pattern allows optimal airflow.

∙The CMA mounting is fully-reversible (can be mounted on either side) with no conversion required.

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PowerEdge R515 Technical Guide