Power subsystem

Power subsystem

The power subsystem includes the power supply modules, the power distribution board, and the plug-in VRMs.

The power subsystem can be configured in either of two ways:

■Two power supply modules installed providing 1 + 1 redundant power at 220 VAC, 115/120/127 VAC, and 100/110 VAC

■One power supply module installed providing non-redundant power at 220 VAC, 115/120/127 VAC, and 100/110 VAC

Each current-sharing power supply module has auto-ranging input and provides 1570W of power when operated between 170 VAC and 264 VAC. Each module requires a power cord to supply AC power to the server. When two power supply modules are installed, the system supports (1+1) power cord redundancy, which lets the server be powered from two separate AC sources. In this configuration, the server will continue to operate without interruption when one of the AC sources fails. The modules are capable of power-safe monitoring.

Power supply module LEDs indicate the condition of the module and the AC power source.

Power good LED (green)

Fault LED (orange)

AC OK LED (green)

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