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Dell Cabling PowerEdge R520 Owner's Manual User Guide

Summary

The Dell PowerEdge R520 Cable Routing Procedures white paper provides best practices for routing and securing cables on the PowerEdge R520 server. Covers cable management arm installation, power cable routing through strain reliefs, and procedures for replacing hot-swap power supplies with CMA on either side. Includes detailed diagrams. Intended for data center engineers and system administrators.

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Cable Routing Procedures for the Dell™ Power Edge™ R520 System This Dell Technical White Paper explains the best practices for routing and securing the cables exiting the back of the R520 system.

Greg Henderson and Jose L. Flores

Data Center Infrastructure Engineering

May 2012

Page Summary Contents For Dell Cabling PowerEdge R520 Owner's Manual User Guide

Page 1 Cable Routing Procedures for the Dell™ Power Edge™ R520 System This Dell Technical White Paper explains the best practices for routing and securing the cables exiting the back of the R520 system. Greg...
Page 2 Cable Routing Procedures for the Dell Power Edge R520 System This document is for informational purposes only and may contain typographical errors and technical inaccuracies. The content is provided a...
Page 3 Cable Routing Procedures for the Dell Power Edge R520 System Contents Introduction ............................................................................................................. 4 Secti...
Page 4 Cable Routing Procedures for the Dell Power Edge R520 System Introduction This white paper covers recommended cable routing procedures for the Dell™ Power Edge™ R520 system in the following racks: • P...
Page 5 Cable Routing Procedures for the Dell Power Edge R520 System 1.2. Routing the power cables through the strain reliefs After you have installed the tray and cables, route the power cable(s) through the...
Page 6 Cable Routing Procedures for the Dell Power Edge R520 System Attaching the inner CMA attachment bracket Figure 4. 1.3.2. Left-side mounting instructions 1. Install the CMA on the rear left side of the...
Page 7 Cable Routing Procedures for the Dell Power Edge R520 System 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 6 for an ex...
Page 8 Cable Routing Procedures for the Dell Power Edge R520 System Section 2: Replacing a hot swap power supply on a Power Edge R520 system with a CMA 2.1. Replacing a hot swap power supply with a left-side...
Page 9 Cable Routing Procedures for the Dell Power Edge R520 System Disconnecting the CMA attachment housings Figure 8. Replacing a hot swap power supply Figure 9.
Page 10 Cable Routing Procedures for the Dell Power Edge R520 System Section 3: Cabling a Power Edge R520 system on sliding rails without a CMA NOTE: The CMA for the Dell Power Edge R520 system is optional. W...
Page 11 Cable Routing Procedures for the Dell Power Edge R520 System Removing the outer CMA brackets for shallow racks Figure 11. Section 4: Cabling a Power Edge R520 system installed on static rails NOTE: Th...

Manual Details

Brand Dell
Pages 11
File Size 771.54 KB
Published June 29, 2026
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Frequently Asked Questions

Which PowerEdge models are recommended for cable routing procedures?

This white paper applies to systems like the R520 running with a CMA in various rack sizes (e.g., PowerEdge 4210, 4820).

Can I use the Cable Management Arm (CMA) on static rails?

No, the CMA accessory is compatible only with sliding rails, not static rails.

How should I route cables when using outer CMA brackets in a shallow rack without one?

You can remove the outer CMA brackets by using a #2 Phillips screwdriver to unscrew them from the sliding rails.

Where are data and power cables secured in a statically mounted system?

Data cables should be placed on either the left rail, and power cables should be placed on the right rail when installed on static rails.