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:
- Cabinet size and clearance
- Cabinet airflow requirements
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 |
|---|
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.
|
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.
|
Published: 2012-03-23
