Bladecenter Ht Unit Power, Controls, And Indicators; Supplying Power To The Bladecenter Ht Unit - IBM BladeCenter HT 8740 Problem Determination And Service Manual

BladeCenter HT unit power, controls, and indicators

This section describes the controls and light-emitting diodes (LEDs) and how to
start and shut down the BladeCenter HT unit.

Supplying power to the BladeCenter HT unit

The BladeCenter HT unit does not have a power switch. The BladeCenter HT unit
has four power connectors; each powers a power module. As viewed from the rear
of the BladeCenter HT unit, power connector 1 (top-right connector) supplies power
to power-module bay 1, power connector 2 (bottom-left connector) supplies power
to power module 2, power connector 3 (top-left connector) supplies power to power
module 3, and power connector 4 (bottom-right connector) supplies power to power
module 4.
Physical view
Power modules 1 and 2 are redundant and provide power to blade bays 1 through
6; power modules 3 and 4 are redundant and provide power to blade bays 7
through 12. To ensure power redundancy, supply power to power connectors 1 and
4 from one power source location, and supply power to power connectors 2 and 3
from another power source location.
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BladeCenter HT Type 8740 and 8750: Problem Determination and Service Guide