However, only the top fan tray cools the SF modules installed in the rear of the chassis.
See Cooling System and Airflow in an EX8216 Switch.
Power Supplies
Power supplies for the EX8216 switch are fully redundant, load-sharing, and hot-insertable
and hot-removable field-replaceable units (FRUs). Each EX8216 switch chassis can hold
up to six 2000 W AC, six 3000 W AC, or six 3000 W DC power supplies.
The 2000 W AC power supplies support both low-voltage line (100–120 VAC) and
high-voltage line (200–240 VAC) AC power configurations on an EX8216 switch.
Each 3000 W AC power supply delivers 3000 W of power at high-voltage line (200–240
VAC) to the EX8216 chassis. Low-voltage line input is not supported for the 3000 W AC
power supplies on the EX8216 switch. Each DC power supply delivers 3000 W of power
to the chassis when the input voltage is in the range –40 VDC through –72 VDC.
The redundant AC configuration ships with six AC power supplies to provide the capacity
to power the system using N+1 or N+N power redundancy. The redundant DC configuration
ships with four DC power supplies. The dual inputs of the DC supplies provide direct
support for N+N power redundancy. The redundant configuration also provides sufficient
capacity for N+1 redundancy in most configurations; if necessary, up to two additional
DC supplies can be added to the system. See AC Power Supply in an EX8200 Switch,
DC Power Supply in an EX8200 Switch, and EX8216 Switch Configurations.
CAUTION:
Mixing different types of power supplies in the same chassis is
not a supported configuration.
Related
Documentation
•
Field-Replaceable Units in an EX8216 Switch
•
Slot Numbering for an EX8216 Switch
•
Connecting and Configuring an EX Series Switch (CLI Procedure) on page 187
•
Connecting and Configuring an EX Series Switch (J-Web Procedure) on page 189
41
Copyright © 2010, Juniper Networks, Inc.
Chapter 2: Supported Hardware
Summary of Contents for JUNOS OS 10.3 - SOFTWARE
Page 325: ...CHAPTER 17 Operational Mode Commands for System Setup 229 Copyright 2010 Juniper Networks Inc ...
Page 1323: ...CHAPTER 56 Operational Mode Commands for Interfaces 1227 Copyright 2010 Juniper Networks Inc ...
Page 2841: ...CHAPTER 86 Operational Commands for 802 1X 2745 Copyright 2010 Juniper Networks Inc ...
Page 3367: ...CHAPTER 113 Operational Mode Commands for CoS 3271 Copyright 2010 Juniper Networks Inc ...
Page 3435: ...CHAPTER 120 Operational Mode Commands for PoE 3339 Copyright 2010 Juniper Networks Inc ...
Page 3529: ...CHAPTER 126 Operational Mode Commands for MPLS 3433 Copyright 2010 Juniper Networks Inc ...