Cabinet Requirements for a QFX3008-I Interconnect Device
You can mount a QFX3008-I Interconnect device in 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.
Cabinet requirements consist of:
Table 1 summarizes cabinet requirements and specifications for a
QFX3008-I Interconnect device.
Table 1: Cabinet Requirements and Specifications for a QFX3008-I Interconnect
Device
Cabinet Requirement | Guidelines for the QFX3008-I Interconnect
Device |
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Cabinet size and clearance | The minimum depth required to accommodate a QFX3008-I
Interconnect device is 39.52 in. (100.38 cm). Large cabinets improve
airflow and reduce the chance of overheating. 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. With adequate cooling air and airflow clearance, you can
stack two devices in a cabinet that has at least 42 U of usable vertical
space. In all cases, the rack must meet the strength requirements
to support the weight of the installed devices.
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Cabinet airflow requirements | When you mount the device in 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 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. For an illustration of chassis
airflow, see Clearance Requirements for Airflow and Hardware Maintenance for a QFX3008-I Interconnect Device. 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 rear 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 a QFX3008-I Interconnect Device.
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