Agema AG7448 - Manual (Page 10)

7 AG-7448PL Series ToR Switch
2.5 Power Supply Modules
The power supply modules are hot-swappable power supply units (PSUs) for the switch.
You can install up to two PSUs. The PSUs operate in a load-sharing mode and provides 1+1
redundancy.
(Figure 2-6: Power Supply Unit)
NOTE:
1+1 redundancy is a system where a switch power supply is backed up by
another switch power supply in a load-sharing mode. If one power supply fails,
the other power supply takes over the full load of the switch.
WARNING:
• The switch includes plug-in power supply and fan tray modules that are
installed into its chassis. All modules must have a front-to-back airflow
direction, or all modules must have a back-to-front airflow direction.
• Risk of explosion if battery is replaced by an incorrect type. Dispose of used
batteries according to the instructions.
• Remove the power cable from the module prior to removing the module
itself. Power cable must not be connected prior to insertion in the chassis or
equivalent.
2.6 Fan Tray Module
The fan tray module is part of the switch air cooling system that provides cooling for the
switch. You must install the fan tray module in the switch that matches the airflow direction
of the installed power supply unit.
(Figure 2-7: Fan Tray Module)