Removing and installing power modules

The BladeCenter T unit is separated into two power domains. To support devices in power domain B, a power-supply module option (consisting of two power modules) must be installed.

The following table summarizes the modules that are powered by each power domain.

Power domain

Power-module bays

Modules powered by the power domain

 

 

 

A

1 and 2

I/O-module bays 1 and 2

 

 

Management-module bays 1 and 2

 

 

Media tray

 

 

Blade bays 1 through 4

 

 

 

B

3 and 4

Blade bays 5 through 8

 

 

I/O-module bays 3 and 4

 

 

 

All four blowers are required for redundant system operation. Power for all four blowers is shared by all installed power modules. One failed blower creates a nonredundant configuration.

If a power module fails or an input power failure occurs, BladeCenter T units that are configured for redundant power operation will operate in a nonredundant mode. You must replace the failing power module or restore input power as soon as possible to regain redundant power operation.

Important:

1.The power modules must be installed in pairs in a domain and must match each other in capacity (wattage, amperage, and so on).

2.To provide true redundant power, BladeCenter T power modules 1 and 3 must be connected to a different input power source than power modules 2 and 4.

46BladeCenter T Type 8720 and 8730: Hardware Maintenance Manual and Troubleshooting Guide

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IBM Type 8730, Type 8720 manual Removing and installing power modules

Type 8730, Type 8720 specifications

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