Determine the Location of the Symmetra RM in the Rack
1.Select a location for the Symmetra RM in your NetShelter enclosure or other
Select a location with adequate air flow that is free from excessive dust. Ensure that the air vents on the sides of the Symmetra are not blocked.
•The Symmetra RM is heavy. Select a rack location sturdy enough to handle the weight. Mount the unit at or near the bottom of the rack.
•Do not operate the unit where temperature or humidity are outside the limits listed in Specifications in the SYMMETRA RM OPERATION MANUAL.
•The Symmetra RM occupies a space of 8U. Some racks have tick marks to indicate the
2.Prepare the rack holes, if necessary. Racks with threaded holes require no preparation.
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3
3
Install the Mounting Rails in the Rack
Œ
5
4 3
2
1
5
4
3
2
1
Locate the designated
If your rack has round holes, insert clip nuts 
(provided ) into the marked holes.
If your rack has square holes, insert either clip 
or
cage 
nuts into the marked holes (cage nut shown).
These nuts will support the ornamental screws that attach the unit to the rack.
1.Loosen the three (3) screws Πthat hold the rails together so that the rails can slide outward. Do not detach the rails.
2. Align the bottom hole on the mounting rail with the fifth hole (counting from the bottom) in the
Expand the rails so that it spans from the front rack post to the back rack post.
3.Attach the rail to the back rack post using the same hardware
screws and conical washers) used in step 2. Repeat the process for the other rails.
4.Tighten the three (3) screws, loosened in step 1, to secure the rails.
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