Supermicro SSE-X3348T, Руководство по установке

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SSE-X3348T/ SSE-X3348TR Switch Installation Manual
4-10
4-4 Power and Grounding
This section focuses on the switch power supplies, how to intall them, and how to
power-on the switch. Connecting the switch to ground is also covered.
Power Supply Modules
The switch supports hot-swappable power supply units (PSUs). You can install up to two
PSUs with matching airflow direction in the switch. The PSUs operate in a load-sharing
mode and provide 1+1 redundancy.
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.
The switch provides two AC power supply module options, which are listed below:
• SSE-X3348T-ACPWR (front-to-back airflow)
• SSE-X3348TR-ACPWR (back-to-front airflow)
CAUTION: The switch includes plug-in power supply and fan tray modules that are installed
into its chassis. All installed modules must have a matching airflow direction. That is, all
modules must have a front-to-back (F2B) airflow direction, or all modules must have a
back-to-front (B2F) airflow direction. The airflow direction of PSUs and fan trays is indicated
by labels on the modules.
The AC Power Supply Modules require power from an external AC power supply that
can provide 100 to 240 VAC, 50-60 Hz. A standard AC power socket is located on the
rear panel of the PSU. The power socket is for the AC power cord.
Figure 4-6. AC Power Supply Module
AC Power Socket
Label Indicates Airflow
Direction of PSU
Release Lever
Power Supply
Module LED