Cabinet Requirements for a QFX3500 Device
You can mount the QFX3500 device 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:
Table 1 provides the
cabinet requirements and specifications for the QFX3500 device.
Table 1: Cabinet Requirements
for the QFX3500 Device
Cabinet Requirement | Guidelines |
|---|
Cabinet size and clearance | The minimum cabinet size for accommodating a QFX3500
device is 36 in. (91.4 cm) deep. Large cabinets improve
airflow and reduce the chance of overheating. |
Cabinet airflow requirements | When you mount the device in a cabinet, ensure that ventilation
through the cabinet is sufficient to prevent overheating. Ensure that the cool air supply you provide through the
cabinet adequately dissipates the thermal output of the device (or
devices). Ensure that the cabinet allows the chassis hot exhaust
air to exit the cabinet without recirculating into the device. 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. The device fans exhaust hot air through the rear of the
chassis. Install the device 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 cabinets
allows for the proper clearance around the device and cabinet.
|
