Cable Routing Procedures for the Dell PowerEdge R820 System Cable Routing Procedures for the Dell™ PowerEdge™ R820 System This Dell Technical White Paper explains the best practices for routing and securing the cables exiting the back of the R820 system. Greg Henderson and Jose L.
Cable Routing Procedures for the Dell PowerEdge R820 System This document 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. © 2012 Dell Inc. All rights reserved. Dell and its affiliates cannot be responsible for errors or omissions in typography or photography. Dell, the Dell logo, and PowerEdge are trademarks of Dell Inc.
Cable Routing Procedures for the Dell PowerEdge R820 System Contents Introduction ............................................................................................................. 4 Section 1: Cabling a PowerEdge R820 system on sliding rails with a CMA .................................... 4 1.1. Connecting the cables to the system ................................................................... 4 1.2. Routing the power cables through the strain reliefs ....................................
Cable Routing Procedures for the Dell PowerEdge R820 System Introduction This white paper covers recommended cable routing procedures for the Dell™ PowerEdge™ R820 system in the following racks: PowerEdge 2410, 4210 PowerEdge 2420, 4220, 4820 (including wide and deep versions) PowerEdge Energy Smart 4020S, 4620S If you are using the optional cable management arm (CMA), following these procedures will allow you to extend the system from the rack for service without powering down or disconnecting the
Cable Routing Procedures for the Dell PowerEdge R820 System 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. Installing the CMA The CMA can be installed on either the rear right or rear left side of the rails as described in the CMA Installation Instructions.
Cable Routing Procedures for the Dell PowerEdge R820 System 1.3.2. Left-side mounting instructions 1. Install the CMA on the 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. 3.
Cable Routing Procedures for the Dell PowerEdge R820 System Figure 5. Left-side mounted CMA installation (preferred) 1.3.3. Right-side mounting instructions Install the CMA on the rear right side of the rails by attaching both CMA housings to the attachment brackets on the rails. The remaining steps are the same as for left-side mounting as described in Section 1.3.2. See Figure 6 for an example of a completed right-side mounted CMA installation. Figure 6.
Cable Routing Procedures for the Dell PowerEdge R820 System Section 2: Replacing a power supply on a PowerEdge R820 system with a CMA 2.1. Replacing a power supply with a left-side mounted CMA 1. Swing the CMA to its service position as described in the CMA Installation Instructions provided with the CMA kit. 2. Remove the tray from underneath the CMA as described in the CMA Installation Instructions. 3. Disengage the strain relief and disconnect the power cord from the power supply. 4.
Cable Routing Procedures for the Dell PowerEdge R820 System Figure 7. Disconnecting the CMA attachment housings Figure 8.
Cable Routing Procedures for the Dell PowerEdge R820 System Section 3: Cabling a PowerEdge R820 system on sliding rails without a CMA NOTE: The CMA for the PowerEdge R820 system is optional. Without the CMA installed, the system must be powered down and all cables disconnected before it can be extended out of the rack. 3.1. Routing the cables 1. Connect all applicable cables to the rear of the system and verify that all connections are secure. 2.
Cable Routing Procedures for the Dell PowerEdge R820 System Section 4: Cabling a PowerEdge R820 system installed on static rails NOTE: The CMA is compatible only with the sliding rails, not the static rails. 1. Follow the instructions contained in the Rack Installation Instructions found in the static rail kit to install the server into a two-post or four-post rack. 2.
