Cabinet Requirements and Specifications for an EX9208 Switch
You can mount an EX9208 switch on a cabinet that contains a
19-in. rack as defined in Cabinets, Racks, Panels, and Associated
Equipment (document number EIA-310-D) published by the
Electronics Industry Association (http://www.eia.org) .
Cabinet requirements consist of:
- Cabinet size and clearance
- Cabinet airflow requirements
Table 1 summarizes cabinet requirements and specifications for EX9208
switches.
Table 1: Cabinet Requirements and Specifications for an EX9208 Switch
Cabinet Requirement | Guidelines for the EX9208 Switch |
|---|
Cabinet size and clearance | - The minimum cabinet size that can accommodate the switch
is 482 mm wide and 800 mm deep. A cabinet larger than the
minimum requirement provides better airflow and reduces the chance
of overheating. To accommodate a single switch, the cabinet must be
at least 13 U high. If you provide adequate cooling air and airflow
clearance, you can stack five switches in a cabinet that has at least
48 U (84 in. or 2.13 m) of usable vertical space
A U is the standard rack unit defined in Cabinets,
Racks, Panels, and Associated Equipment (document number
EIA-310–D) published by the Electronics Industry Association
(http://www.eia.org) . - The minimum front and rear clearance requirements depend
on the mounting configuration you choose. The minimum total clearance
inside the cabinet is 30.7 in. between the inside of the front
door and the inside of the rear door.
|
Cabinet airflow requirements | When you mount the switch on a cabinet, ensure that ventilation
through the cabinet is sufficient to prevent overheating. Consider
the following requirements list when planning for chassis cooling: - Ensure that the cool air supply you provide through the
cabinet adequately dissipates the thermal output of the switch (or
switches).
- Ensure that the cabinet allows the chassis hot exhaust
air to exit the cabinet without recirculating into the switch. An
open cabinet (without a top or doors) that employs hot air exhaust
extraction from the top allows the best airflow through the chassis.
If the cabinet contains a top or doors, perforations in these elements
assist with removing the hot air exhaust. For an illustration of chassis
airflow, see Clearance Requirements for Airflow and Hardware Maintenance for an EX9208 Switch.
- The switch fans exhaust hot air through the right side
of the chassis (the left side when you face the front of the chassis,
where the fan tray slides in). Install the switch in the cabinet in
a way that maximizes the open space on the fan tray side of the chassis.
This maximizes the clearance for critical airflow.
- Route and dress all cables to minimize the blockage of
airflow to and from the chassis.
- Ensure that the spacing of rails and adjacent racks allows
for the proper clearance around the switch and rack as specified in Clearance Requirements for Airflow and Hardware Maintenance for an EX9208 Switch.
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Published: 2013-04-02
