Dell EMC ECS EX300, Installation Manual

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7. Repeat all steps to install rails for all EX300 nodes.
Secure the rail assemblies to the cabinet
The supplied screws and washers are used to secure the rail assemblies to the front
and rear of the cabinet.
Note
For square hole cabinets, install the supplied conical washer before installing the
screw. For unthreaded round hole cabinets, install only the screw without the conical
washer.
Procedure
1. Align the screws with the designated U spaces on the front and rear rack
flanges.
Ensure that the screw holes on the tab of the system retention bracket are
seated on the designated U spaces.
2. Insert and tighten the two screws using the Phillips #2 screwdriver.
Figure 8 Installing screws
Install rails for switches
After you install all node rails, install the rails for the switches.
Dell EMC S5148F switches for ECS are installed with the Dell EMC Gen 3.14 sliding rail
system.
The Dell EMC S5148F switches are required for the two back-end switches. The
customer has the option of using their own switches for the two front-end switches.
CAUTION
If the customer has chosen to install their own front-end switches, make sure to
review all of the front-end switch requirements, including Request for Product
Qualification (RPQ) and cabling requirements, listed in the
ECS EX-series EX300
and EX3000 Hardware Guide .
Rail Installation
22 EX300 Third-Party Rack Installation Guide