Table 26: Rack Requirements for the EX4650 (continued)
GuidelinesRack Requirement
The holes in the mounting brackets are spaced at 1 U (1.75 in. or 4.45 cm), so
that the switch can be mounted in any rack that provides holes spaced at that
distance.
Mounting bracket hole spacing
•
Ensure that the rack is a 19-in. rack as defined in Cabinets, Racks, Panels,
and Associated Equipment (document number EIA-310–D) published by
the Electronics Components Industry Association (http://www.ecianow.org/).
•
Ensure that the rack is one of the following standard lengths:
•
23.6 in. (600 mm)
•
30.0 in. (762 mm
•
31.5 in. (800 mm)
•
Ensure that the rack rails are spaced widely enough to accommodate the
switch chassis’ external dimensions. The outer edges of the front-mounting
brackets extend the width to 19 in. (48.26 cm).
•
Either side of the switch needs to be mounted flush with the rack and still
adjustable for racks with different depths. The front and rear rack rails must
be spaced between 23.62 in. (600 mm) and 31.5 in. (800 mm) front to back.
•
The rack must be strong enough to support the weight of the switch.
•
Ensure that the spacing of rails and adjacent racks allows for proper
clearance around the switch and rack.
Rack size and strength
•
Secure the rack to the building structure.
•
If earthquakes are a possibility in your geographical area, secure the rack
to the floor.
•
Secure the rack to the ceiling brackets as well as wall or floor brackets for
maximum stability.
Rack connection to building structure
Cabinet Requirements for EX4650 Switches
You can mount the EX4650 in a cabinet that contains a four-post 19-in. rack as defined in Cabinets, Racks,
Panels, and Associated Equipment (document number EIA-310-D) published by the Electronics Industry
Association.
Cabinet requirements consist of:
•
Cabinet size and clearance
•
Cabinet airflow requirements
62
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