Juniper QFabric QFX3008-I, Manual, Page: 68 / 472

Table 7: Physical Specifications of a QFX3008-I Interconnect Device (continued)
Value Description
• Chassis with midplane: Approximately 205 lb (93 kg)
• Chassis with all FRUs: Approximately 650 lb (295 kg)
NOTE: This represents the weight of the chassis including all required and optional
FRUs. This does not include optical transceivers and cabling.
• 16-port QSFP+ front card: 18.3 lb (8.3 kg)
• Control Board: 8.4 lb (3.8 kg)
• Rear card: 10.0 lb (4.5 kg)
• Side fan tray: 2.7 lb (1.2 kg)
• Front fan tray and front panel display: 16.7 lb (7.6 kg)
• Rear fan tray: 19.4 lb (8.8 kg)
• Power supply: 11.2 lb (5.1 kg)
• Wiring tray: 8.0 lb (3.6 kg)
Weight
Related
Documentation
Rack Requirements for a QFX3008-I Interconnect Device on page 95
•
•
Cabinet Requirements for a QFX3008-I Interconnect Device on page 98
•
Installing and Connecting a QFX3008-I Interconnect Device on page 223
Midplane in a QFX3008-I Interconnect Device
The midplane is located in the center of the chassis and forms the rear of the front card
cage. The side fan trays, front fan tray and front panel display, and 16-port QSFP+ front
cards plug into the midplane from the front of the chassis. The rear fan tray, Control
Boards, rear cards, power supplies, and wiring trays plug into the midplane from the rear
of the chassis. The midplane contains an EEPROM that stores the serial number and
revision level of the midplane.
The midplane performs the following functions:
•
Power distribution—The midplane distributes power to all the device components
from the power supplies that plug into it.
• Control-signal connectivity—The midplane transports the control signals exchanged
by system components for monitoring, control, and management purposes.
•
Transfer of data between 16-port QSFP+ front cards and rear cards—The midplane
provides connectivity for data traffic to and from the front cards and the rear cards.
WARNING: High levels of electrical energy are distributed across the device
midplane. Do not touch the midplane connectors or any component
connected to the midplane with any metallic object while you are servicing
components installed in the device.
Copyright © 2012, Juniper Networks, Inc. 42
QFX3000 Hardware Documentation