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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 in normal operation (5° to
40°C or 41° to 104°F), 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. For operation above 40°C (104°F), all power modules must be
installed and energized to allow current-sharing between the paired power
modules.
Important:
1. The power modules must be installed in pairs in a domain and must match
2. To provide true redundant power, BladeCenter T power modules 1 and 3 must
Power module 1
Power module 3
44
BladeCenter T Type 8267: Hardware Maintenance Manual and Troubleshooting Guide
each other in capacity (wattage, amperage, and so on).
be connected to a different input power source than power modules 2 and 4.
C M
M
1
ES D
Power module 4
C M
M
2
Power module 2
Filler module
Release handle
Release button
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