Intel SRPL8 manual Power System Description/Calculating Power Usage

APower System: Description/Calculating Power Usage

This appendix describes the modular power system and explains how to calculate power usage for your server.

WARNING

Only a QUALIFIED SERVICE TECHNICIAN is authorized to remove the server covers and to access any of the components inside the server. Before removing the covers, see “Safety: Before You Remove Server Covers” on page 93 and “ Warnings and Cautions” on page 94.

Power System

The modular power system for the server is provided by up to three 750 watt autoranging power supplies and a midplane. The power system may be configured with two power supplies (standard) or three power supplies (2 + 1, redundant). The power supplies are mounted in a

2 + 1 pattern in the back of the chassis along the bottom. Each power supply has an integrated fan for cooling.

The midplane provides connectors for the hot-swap power supplies. The midplane also provides the interface logic for power supply related management functions such as

∙Power supply presence detection.

∙Power supply fault signal reporting.

Care must be taken not to overload a branch circuit of the AC mains by plugging too many power cords into a single AC circuit. We recommend plugging the power cord of the server into a separate circuit.

If a power supply fails in the redundant power system, the yellow power supply failure LED on the front panel starts flashing. The supply can be hot-swapped—removed and replaced—without turning off the power or impacting server operations (providing that 3 power supplies are installed.

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