Table 87: Cabinet Requirements For A Qfx3600 Or Qfx3600-I Device - Juniper QFabric QFX3000-G Hardware Documentation

QFX3000-G QFabric System Hardware Documentation

Table 87: Cabinet Requirements for a QFX3600 or QFX3600-I Device

Cabinet Requirement Guidelines
Cabinet size and The minimum cabinet size for accommodating a QFX3600 device is 28 in. (71.1 cm) deep. Large
clearance cabinets improve airflow and reduce the chance of overheating.
Cabinet airflow When you mount the device in a cabinet, ensure that ventilation through the cabinet is sufficient to
requirements prevent overheating.
Related
Documentation
Cabinet Requirements for a QFX3500 Device
242
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.
Clearance Requirements for Airflow and Hardware Maintenance for a QFX3600 or
QFX3600-I Device on page 249
Rack Requirements for a QFX3600 or QFX3600-I Device on page 233
Mounting a QFX3600 or QFX3600-I Device on Four Posts in a Rack or Cabinet on
page 458
Mounting a QFX3600 or QFX3600-I Device on Two Posts in a Rack or Cabinet on
page 455
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:
Cabinet size and clearance
Cabinet airflow requirements
Table 88 on page 243 provides the cabinet requirements and specifications for the
QFX3500 device.
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