Juniper QFX5110 - Table 23: Rack Requirements for the QFX5110

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Mounting bracket hole spacing
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Rack size and strength
Table 23 on page 54 provides the rack requirements and specifications for the QFX5110.
Table 23: Rack Requirements for the QFX5110
GuidelinesRack Requirement
Use a four-post rack that provides bracket holes or hole patterns spaced at 1 U
(1.75 in. or 4.45 cm) increments and that meets the size and strength requirements
to support the weight.
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.
Rack type
The holes in the mounting brackets are spaced at 1 U (1.75 in. or 4.45 cm), so that
the switch can be mounted in any rack that provides holes spaced at that distance.
Mounting bracket hole spacing
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Ensure that the rack complies with the standards for a 19-in. or 23-in. rack as
defined in Cabinets, Racks, Panels, and Associated Equipment (document number
EIA-310–D) published by the Electronics Industry Association.
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A 600-mm rack as defined in the four-part Equipment Engineering (EE); European
telecommunications standard for equipment practice (document numbers ETS
300 119-1 through 119-4) published by the European Telecommunications
Standards Institute.
The horizontal spacing betweenthe rails in a rack that complies with this standard
is usually wider than the device's mounting brackets, which measure 19 in.
(48.26 cm) from outer edge to outer edge. Use approved wing devices to narrow
the opening between the rails as required.
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Ensure that the rack rails are spaced widely enough to accommodate the switch
chassis’ external dimensions. The outer edges of the front-mounting brackets
extend the width to 19 in. (48.26 cm).
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For four-post installations, the front and rear rack rails must be spaced between
23.6 in. (60 cm) and 36 in. (91.4 cm) front-to-back.
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The rack must be strong enough to support the weight of the switch.
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Ensure that the spacing of rails and adjacent racks allows for proper clearance
around the switch and rack.
Rack size and strength
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Secure the rack to the building structure.
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If earthquakes are a possibility in your geographical area, secure the rack to the
floor.
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Secure the rack to the ceiling brackets as well as wall or floor brackets for
maximum stability.
Rack connection to building structure
Related
Documentation
QFX5110 Chassis Physical Specifications on page 9•
• Rack-Mounting and Cabinet-Mounting Warnings on page 164
• QFX5110 Clearance Requirements for Airflow and Hardware Maintenance on page 55
• Mounting a QFX5110 in a Rack on page 77
Copyright © 2017, Juniper Networks, Inc.54
QFX5110 Switch Hardware Guide