Juniper QFX3500 - Rack Requirements for a QFX3500 Device; Table 21: Rack Requirements for the QFX3500 Device

Related
Documentation
QFX5110 Site Preparation Checklist•
• Site Preparation Checklist for a QFX5100 Device
• Site Preparation Checklist for a QFX3600 or QFX3600-I Device
• Site Preparation Checklist for a QFX3500 Device on page 45
• Site Preparation Checklist for EX4300 Switches
Rack Requirements for a QFX3500 Device
A QFX3500 device is designed to be installed on four-post racks.
Rack requirements consist of:
•
Rack type
•
Mounting bracket hole spacing
•
Rack size and strength
•
Rack connection to the building structure
Table 21 on page 51 provides the rack requirements and specifications for the QFX3500
device.
Table 21: Rack Requirements for the QFX3500 Device
GuidelinesRack Requirement
Use a four-post rack. You can mount the device on 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 device can
be mounted in any rack that provides holes spaced at that distance.
Mounting bracket hole
spacing
•
Ensure that the rack complies with the standards for a 19-in. rack as defined in Cabinets, Racks,
Panels, and Associated Equipment (document number EIA-310–D) published by the Electronics
Industry Association.
•
Ensurethat the rack rails are spaced widelyenough toaccommodatethe devicechassis’external
dimensions. The outer edges of the front-mounting brackets extend the width to 19 in. (48.26cm).
•
The front and rear rack rails must be spaced between 28 in. (71.1 cm) and 36 in. (91.4 cm)
front-to-back.
•
The rack must be strong enough to support the weight of the device.
•
Ensure that the spacing of rails and adjacent racks allows for proper clearance around the device
and rack.
Rack size and strength
•
Secure the rack to the building structure.
•
If earthquakes are a possibility in your geographical area, secure the rack to the floor.
•
Secure the rack to the ceiling brackets as well as wall or floor brackets for maximum stability.
Rack connection to
building structure
51Copyright © 2017, Juniper Networks, Inc.
Chapter 5: Preparation Overview