Dell PowerEdge 2420 T610 Rack Infrastructure Cable Routing Guide PDF

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Summary of Content for Dell PowerEdge 2420 T610 Rack Infrastructure Cable Routing Guide PDF

Cable Routing Procedures for Dell PowerEdge T610 Systems

A Dell Technical White Paper

Dell Datacenter Infrastructure Engineering

By Chris Kitten and Jose L. Flores

March 2011

Cable Routing Procedures for Dell PowerEdge T610 Systems

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THIS WHITE PAPER IS FOR INFORMATIONAL PURPOSES ONLY, AND MAY CONTAIN TYPOGRAPHICAL

ERRORS AND TECHNICAL INACCURACIES. THE CONTENT IS PROVIDED AS IS, WITHOUT EXPRESS

OR IMPLIED WARRANTIES OF ANY KIND.

2011 Dell Inc. All rights reserved. Reproduction of this material in any manner whatsoever without

the express written permission of Dell Inc. is strictly forbidden. For more information, contact Dell.

Dell, the DELL logo, the DELL badge, and PowerEdge are trademarks of Dell Inc.

Cable Routing Procedures for Dell PowerEdge T610 Systems

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Contents Introduction ............................................................................................................................................................... 2

Section 1: Cabling a Dell PowerEdge T610 With a Cable Management Arm (CMA) ............................................ 2

1.1 Connecting the CMA Cables to the System .................................................................................................. 2

1.2 Routing the Power Cables Through the Strain Reliefs ................................................................................. 3

1.3 Installation of the CMA ................................................................................................................................ 3

Section 2: Cabling a Dell PowerEdge T610 System Without a CMA ..................................................................... 5

2.1 Routing the Cables ....................................................................................................................................... 5

Section 3: Replacing a Power Supply on a PowerEdge T610 System With a CMA.................................................. 6

Table of Figures

Figure 1: System with Cables Installed .................................................................................................................. 2

Figure 2: Routing Power Cables Through the Strain Reliefs ............................................................................. 3 Figure 3: Routing the Cables Through the CMA ................................................................................................. 4 Figure 4: Right-Side Mounted CMA Installation .................................................................................................. 4

Figure 5: Left-Side Mounted CMA Installation ..................................................................................................... 5 Figure 6: Cable Routing Without a CMA ............................................................................................................... 5

Figure 7: Replacing the Power Supply ................................................................................................................... 6

Cable Routing Procedures for Dell PowerEdge T610 Systems

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Introduction This white paper covers recommended cable routing procedures for Dell PowerEdge T610

systems in the following racks:

PowerEdge 2410

PowerEdge 4210

PowerEdge 2420

PowerEdge 4220 (including wide and deep versions)

PowerEdge 4820 (including wide and deep versions)

If you are using the optional CMA, following these procedures will allow you to extend the system

from the rack for service without powering down or disconnecting the cables. If you are not using the

CMA, following these procedures will ensure secure attachment and strain relief of the cables behind

the system. For guidelines on how to route cables within the rack, refer to the Dell Best Practices

Guide for Rack Enclosures white paper.

Section 1: Cabling a Dell PowerEdge T610 With a Cable Management

Arm (CMA) This section details how to cable a PowerEdge T610 system using a CMA. If you are cabling the

system without the optional CMA, refer to Section 2.

Follow the instructions contained in the Rack Installation Guide in the rail kit to install the server into

the rack. Once installed, use these instructions to install the cables. All illustrations in the following

sections were created using a PowerEdge T610 system.

NOTE: PowerEdge T610 systems are compatible with the PowerEdge T710 rails and CMAs.

1.1 Connecting the CMA Cables to the System

Attach the CMA tray to the back of the rails as described in the CMA Installation Instructions provided in the CMA kit. Connect all applicable cables to the rear of the system and verify that all connections are secure. See Figure 1. Figure 1: System with Cables Installed

Cable Routing Procedures for Dell PowerEdge T610 Systems

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1.2 Routing the Power Cables Through the Strain Reliefs

After you have installed the tray and cables, route the power cables through the strain reliefs located

on the power supply handles as shown in Figure 2.

Figure 2: Routing Power Cables Through the Strain Reliefs

1.3 Installation of the CMA

The CMA can be installed on either the rear right or rear left side of the rails. Mounting the CMA on the

side that is opposite of the power supplies (right-side mount) is recommended; otherwise, the CMA

must be partially disconnected in order to remove the lower power supply. Refer to Section 3 for

details on power supply replacement.

NOTE: For guidelines on how to route cables within the rack, refer to the Dell Best Practices Guide for

Rack Enclosures white paper.

NOTE: If you are installing fiber-optic cables in the CMA, a cable bend radius of at least 1 inch must be

maintained throughout the length of the cable. It is recommended that fiber-optic cables be routed

on the exterior of the cable bundle to increase the bend radius of the fiber-optic cables through the

CMA. Additionally, a large amount of slack at the entrance and exit of the CMA is recommended.

1. Install the CMA on either the rear right or rear left side of the rails by attaching both CMA housings

to the attachment brackets on the rails.

2. Route the cables through the CMA while avoiding twisting the cables. Use the hook and loop

straps on the CMA to secure the cables. See Figure 3.

3. If the cable bundle includes a keyboard, video, and mouse (KVM) dongle, place the dongle inside

the CMA basket.

4. Once you have routed all the cables through the CMA, dress the cable slack between the back of

the system and the entrance of the CMA using the tie wraps (shown in yellow in all illustrations)

provided in the CMA kit.

Cable Routing Procedures for Dell PowerEdge T610 Systems

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5. Clip off the excess length of material from the tie wraps. Make sure that the heads of the tie wraps

are positioned so as to avoid interference with adjacent systems. Return the CMA to the closed

(retracted) position.

6. Extend the system out of the rack to verify that there is sufficient slack in the cables on both ends

of the CMA.

See Figure 4 for an example of a completed right-side mounted CMA installation.

See Figure 5 for an example of a completed left-side mounted CMA installation.

Figure 3: Routing the Cables Through the CMA

Figure 4: Right-Side Mounted CMA Installation (Preferred)

Cables entering the CMA should have

a small amount of slack to avoid cable

strain when the CMA is extended.

NOTE: Do not store excess cable

slack inside the CMA. The cable may

protrude through the CMA, thus

causing binding and potentially

damaging the cable.

KVM dongle placed inside the basket.

Cable Routing Procedures for Dell PowerEdge T610 Systems

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Figure 5: Left-Side Mounted CMA Installation

Section 2: Cabling a Dell PowerEdge T610 System Without a CMA NOTE: The CMA on Dell PowerEdge T610 systems is optional. Without the CMA installed, the

system must be powered down and all cables disconnected before it can be removed from the rack.

2.1 Routing the Cables

1. Connect all applicable cables to the rear of the system and verify that all connections are secure.

2. Using the hook and loop straps supplied with the rail kit, bundle the cables and secure them to

either the left or right CMA attachment brackets as described in the Rack Installation Instructions.

See Figure 6 for an example of data cables secured to the left CMA bracket and power cables

secured to the right CMA bracket.

3. It is recommended that the cables be secured to the outer brackets, but cables may be secured to

the inner brackets as well if desired.

Figure 6: Cable Routing Without a CMA

Cable Routing Procedures for Dell PowerEdge T610 Systems

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Section 3: Replacing a Power Supply on a PowerEdge T610 System With a

CMA NOTE: The steps described below apply to the bottom power supply only when the CMA is installed

to the left side. If the CMA is attached to the right side, both power supplies can be removed without

removal of the CMA. If the CMA is attached to the left side, the top power supply can be replaced with

the CMA in its closed (retracted) position.

1. Swing the CMA to its service position.

2. Disengage the strain relief and disconnect the power cord from the power supply.

3. Disconnect the inner CMA attachment housing from the rail as shown in Figure 8.

4. While supporting the CMA with one hand, remove and replace the power supply with the

other hand as shown in Figure 8.

5. Reconnect the CMA attac

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