Silicon Graphics Origin 350, User Manual

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42 007-4566-001
1: Installation and Operation
Rackmounting Modules with Shelf Rails
This section describes how to rackmount a module using shelf rails. The NUMAlink
module, the 4U PCI expansion module, and the TP900 storage module are rackmounted
with shelf rails (also known as fixed rails).
The module ships with shelf rails that must be mounted in the rack. The shelf rails
support the module within the rack.
To attach the shelf rails to the rack, follow these steps:
1. Locate the slot location in the rack in which you will install the module.
2. In the slot location from step 1, position the left shelf rail at a 90-degree angle to the
front and rear rack rails (see Figure 1-23).
3. Insert the top-front bracket tab into one of the narrow slots in the front rack rail.
4. Insert the top-rear bracket tab into the narrow slot in the rear rack rail.
Note: Verify that the tabs are the same height to ensure that the module is level in the
rack.
5. Lower the bottom of the shelf rail until its two lower tabs engage with the wide slots
in the front and rear rack rails.
6. Install the two push-in fasteners that secure the shelf rail to the front and rear rack
rails.
7. Place the EMI gasket bracket on the rear rack rail. Then install the two screws that
secure the bracket and the shelf to the rear rack rail.
8. Repeat steps 2 through 7 for the right shelf rail.