Rear View; Blower Modules - IBM BladeCenter T 8720 Installation And User Manual

Rear view

This section identifies the components and indicators on the rear of the
BladeCenter T unit.
Blower module 2
Blower module 4

Blower modules

The blower modules are hot-swap units that are installed into the rear of the
system. The BladeCenter T unit comes with four blowers that are in a 3+1
redundancy configuration. All the cooling requirements are met if one blower fails.
All blowers contain a backflow device that prevents the system from drawing air into
the exhaust port of a failed blower. The management module in the BladeCenter T
unit controls the blower speed and detects blower failures.
Blower LEDs: The LEDs on each blower provide status information about the
blower.
v Power: When this green LED is lit, it indicates that the blower module has
v Error: This amber LED is lit and stays lit when an error has been detected in the
I/O module 2
KVM module
2 4
I/O module 4
Blower
power.
blower. The system error LED on the BladeCenter system-status panels is also
lit.
I/O module 1
TOP D TOP D
2 1
Alarms
CRT MNR
MJR
1 3
BTM E BTM E
I/O module 3
ESD connector
Error LED
Chapter 4. BladeCenter T components, controls, and LEDs
LAN module
Blower module 1
Blower module 3
Power LED
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