Aruba S3500 Series Wired Access Point
| Installation Guide
S3500 Mobility Access Switch |
19
Figure 11
shows the airflow pattern for the S3500. The blue arrows show cool air being pulled into the
device and the red arrows show warm air being forced out by the fan tray module. When installing your
S3500, ensure that you leave sufficient space around the device for proper airflow.
Figure 11
Airflow Pattern
Power Supply
The Aruba S3500-series Power Supply adapts electrical power for use with the S3500. The device chassis
has two slots that can hold individual power supplies to support load sharing, redundancy, and fault
tolerance.
The Aruba S3500 is shipped with one hot-swappable, field-replaceable, AC power supply (350W or 600W,
depending on the model) and one blank face plate. The included power supply is installed in the slot PSU 0,
while slot PSU 1 has a blank face plate covering the opening. The mobility access switch can operate with
one or two active power supplies, depending on the demands of your configuration.
350W Power Supply: This power supply has a single voltage rail, at 12V, and does not support PoE.
600W Power Supply: This power supply has two voltage rails, one at 12V and the other at 56V, and is
capable of supporting PoE.
1050W Power Supply: This power supply has two voltage rails, one at 12V and the other at 56V, and is
capable of supporting PoE.
Load Sharing
Load sharing occurs when more than one power supply of the same rating is installed in the S3500 and
turned on. Load sharing divides the total power load of the switch among all available power supplies. Since
the power supplies work together, the effective power capacity of the switch is increased with each
additional power supply.
Redundancy
With power redundancy, the S3500 can continue normal operation even when a power supply fails or is
turned off. When multiple power supplies are installed, if one becomes unavailable (fails, or is turned off or
removed) the remaining power supplies will attempt to provide full power for the device. If the device’s
total power load does not exceed the combined rated output of the remaining, operational power supplies,
Never insert or remove a power supply while the power cord is connected. Verify that cord has been disconnected
from the power supply before installation or removal.
