Table 5: Physical Specifications Of The Qfx3100 Director Device - Juniper QFabric QFX3000-G Hardware Documentation

QFX3100 Director Device Component Redundancy
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Chassis Physical Specifications for a QFX3100 Director Device

Table 5: Physical Specifications of the QFX3100 Director Device

Description
Height
Chassis width
Chassis depth
Weight
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Documentation
Copyright © 2018, Juniper Networks, Inc.
The HDD modules in the two QFX3100 Director devices operate in a redundant array of
independent disks (RAID) system to synchronize directories or files across the two Director
devices in a QFX3100 Director group. The QFX3100 Director devices are connected
together through two ports on each Director device.
The following hardware components provide redundancy on a QFX3100 Director device:
Power supplies—There are two power supplies in a QFX3100 Director device. Each
power supply provides power to all components in the device. The two power supplies
provide full power redundancy to the device. If one power supply fails or is removed,
the second power supply balances the electrical load without interruption.
Cooling system—There are three fan modules in a QFX3100 Director device. If a fan
module fails and is unable to keep the QFX3100 Director device within the desired
temperature limits, chassis alarms are triggered and the QFX3100 Director device may
shut down.
Hard disk drive (HDD) modules—There are two HDD modules in a QFX3100 Director
device. The HDD modules are fully redundant storage units; each time a directory or
file is stored on one HDD module, the same directory or file is stored on the other HDD
module.
AC Power Supply in a QFX3100 Director Device on page 34
Cooling System and Airflow in a QFX3100 Director Device on page 31
HDD Modules in a QFX3100 Director Device on page 33
The QFX3100 Director device provides Routing Engine functionality for the QFabric
system. Table 5 on page 29
Director device.
Value
3.5 in. (8.9 cm)
17.26 in. (43.7 cm)
23.5 in. (59.7 cm)
Chassis with FRUs installed: 41.2 lb (18.7 kg)
Cabinet Requirements for a QFX3100 Director Device on page 238
Mounting a QFX3100 Director Device on Two Posts in a Rack or Cabinet on page 380
summarizes the physical specifications of the QFX3100
Chapter 2: QFX3100 Overview
29