Enterasys Matrix N3 Installation Guide download pdf (Page 21)

Features

Introduction 1-3

Redundant Power Supplies

The N3 chassis supports up to two 7C203-1 power supplies in the lower two slots of the chassis

labeled PS1 and PS2. One power supply provides sufficient power for a chassis that is fully loaded

with modules. However, a second power supply may be installed to provide redundancy and load

sharing.

When two power supplies are installed, each power supply is capable of load sharing 50% (+/- 5%)

of the total power required by the chassis. This not only provides redundancy, it also extends the

life of the power supplies. If one power supply fails, the other power supply supports the entire

power load of the chassis without interruption to network traffic. Refer to Section 2.1 for power

outlet requirements.

Power Supply LANVIEW

LEDs

Each power supply comes equipped with LANVIEW LEDs for at-a-glance diagnostics that

indicate individual power supply status and overall chassis redundancy status. Refer to Chapter 2,

Installation Requirements and Guidelines, for a full explanation of the power supply LEDs and

their definitions.

Power Supply Status via Management

The 7C203-1 power supplies report information to the modules installed in the chassis regarding

their present operating status as well as the fan tray status. This information includes the following:

• Power Supply ID (PS1, PS2)

• Power Supply Status (normal/fault/not installed)

• Power Supply Redundancy Indication (redundant/not available)

• Fan Status (normal/fault)

Refer to the module-specific user’s guide for instructions on how to access power supply status

information via Local Management.

Auto-Ranging Power Supplies

The 7C203-1 power supplies automatically adjust to the input voltage ranges of 100 to 125 Vac, or

200 or 250 Vac, with a frequency range of 50 to 60 Hz. For more details, refer to the operating

specifications in Appendix A. No additional adjustments are necessary. For installations in North

America, one 15 A power cord is required for each power supply. See Section 3.3 for more details.

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Enterasys Matrix N3 Installation Guide Page 21