Redundancy
With power redundancy, the Aruba 8360 switch can continue normal operation even when one power
supply fails or is powered off. When two power supplies are installed, if one becomes unavailable (fails, is
powered off or removed) the remaining power supply provides full power for the device.
Even though the switch will run with one power supply removed, for thermal integrity reasons it is highly
recommended to not remove a failed power supply, until the replacement can be installed.
Hot swapping
Hot swapping allows you to replace one failed power supply while the other provides full power. This makes
it unnecessary to shut down the switch during the replacement procedure.
NOTE: If both power supplies are faulted, missing and/or use misconfigured airflow direction,
the system will shut down for five minutes due to insufficient cooling.
CAUTION: Never insert or remove a power supply while the power cord is connected. Verify
that the cord has been disconnected from the power supply before installation or removal.
Fan trays
The Aruba 8360 switch is equipped with three field-replaceable, hot-swappable fan trays. Each fan tray
features individual fans that pull air through the chassis from Port-to-Power or Power-to-Port.
• Port-to-Power Airflow (Fan Tray): JL714A
• Power-to-Port Airflow (Fan Tray): JL715A
NOTE: In the event of missing fan trays, misconfigured airflow direction, and/or faulted fans, the
switch will try to maintain adequate cooling by increasing fan speeds and/or disabling
misconfigured devices. If adequate cooling cannot be maintained, the switch will power off for
five minutes before rebooting and assessing cooling capabilities.
CAUTION: Fan trays and power supplies installed in an 8360 switch must have the same cooling
air flow direction (port-to-power or power-to-port). Air flow direction in an 8360 switch is not
controlled by software. To change the air flow direction, replace the power supplies and fan
trays with power and fan tray units supporting the air flow direction you require.
CAUTION: A minimum of two working fan trays are required for operation. The system will
automatically shutdown if overheating is detected. If fewer than 3 working fan trays are
detected, the Global status, Rear status and corresponding Fan tray LEDs will FLASH amber.
CAUTION: If one fan tray is missing for more than two minutes the system will shutdown. If two
or more fan trays are missing, the system will shutdown immediately.
CAUTION: System airflow direction (Port-to-Power or Power-to-Port) is configured automatically
at system initialization and cannot be reconfigured by the user. System airflow direction is
determined by the power supply type installed in PS1 at initialization time (or PS2 if PS1 is
absent or faulted). Any Fan tray or Power supply of conflicting airflow type will be disabled by
the system. Ensure only matching Fan trays and Power supplies are used at any given runtime.
Fan trays are color-coded for Port-to-Power or Power-to-Port cooling airflow.
• Red release latch indicates Port-to-Power airflow.
• Blue release latch indicates Power-to-Port airflow.
20
Aruba 8360 Switch Series Installation and Getting Started
Guide
