Installation guide

10 Brocade ServerIron ADX Installation Guide
53-1003445-01
Cooling systems
1
You install the power supplies (AC or DC) at the back of the chassis. Each power supply has one
LED on its faceplate to provide status. For more information about operation of the power supply
LED, refer to Table 2 on page 50. For power supply specifications, refer to “Power specifications”
on page 67.
ServerIron ADX chassis device power supplies
ServerIron ADX 4000 accommodates up to two power supplies (AC or DC) with one required and
one redundant.
ServerIron ADX 8000 and ServerIron ADX 10000 accommodate up to four power supplies (AC or
DC) with two required and one or two redundant. Because power is supplied over a common power
bus, any power supply purchased in addition to the two required will provide backup for any supply
that fails. Equipping a ServerIron ADX 8000 or ServerIron ADX 10000 with two additional power
supplies provides full redundancy for both of the required power supplies.
For power supply specifications, refer to “Power specifications” on page 67.
You install the power supplies (AC or DC) in the slots along the bottom of the chassis (ServerIron
ADX 4000 or ServerIron ADX 8000) or along the right side of the chassis (ServerIron ADX 10000).
The installed power supplies provide power to all chassis components, sharing the workload
equally and reporting their status to the Management Module (MM). If the MM detects that one of
these power supplies has failed or overheated, the MM will redistribute the failed power supply
workload to the remaining power supplies.
Each power supply has three LEDs on its faceplate that provide status for the input power, output
power and notification of alarms sent. If the input power and output power LEDs are on (a steady
green), the power supply is providing power to the chassis components. For more information about
operation of the power supply LEDs, see the AC and DC power supply sections in Table 3 on
page 53. The power supplies are hot swappable, which means you can remove and replace them
without powering down the system.
NOTE
After a power supply is removed from a ServerIron ADX 4000, ServerIron ADX 8000 or ServerIron
ADX 10000 chassis, the software determines if there is enough power to power-on the interface
modules. If it determines that there is not enough power, some interface modules are powered off.
Cooling systems
Upon system startup, the fans in ServerIron ADX run at medium speed, and the speed is changed
to low. The fans switch to high speed only if the temperature sensors detect a need for additional
cooling.
By default, ServerIron ADX polls the temperature sensor on each module every 60 seconds to get a
temperature reading. Depending on the temperature readings for the modules, the system can do
the following:
• Leave the fan speed as is
• Increase the fan speed
• Decrease the fan speed
• Shut down a module to prevent damage