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Fujitsu ホームシアターサーバー M8000

1-22 SPARC Enterprise M8000/M9000 Servers Overview Guide • April 2007

1.3.4 FAN Unit

The FAN unit is used to cool the server. There are two types of FAN units, with the

following features:

■ A redundant fan configuration enables continuous system operation even if a fan

fails during system operation.

■ Hot system maintenance or replacement of a faulty fan can be performed during

system operation.

1.3.5 Power Supply Unit

The power supply unit (PSU) feeds power to each unit, and has the following

features:

■ A redundant configuration enables the system operation to continue without

interruption even if a power supply unit fails during system operation.

■ Hot system maintenance or replacement of a faulty power supply unit can be

performed during system operation.

1.3.6 Crossbar Unit

The crossbar unit (XBU) consists of crossbar switches that logically connect CMUs

and IOUs.

The XBU has redundant bus routes. If one route fails, the system can be restarted

through the other route to continue operation.

1.3.7 Clock Control Unit

The clock control unit (CLKU) contains an LSI module used for the clock.

The CLKU has redundant clock supply routes. If one route fails, the system can be

restarted through the other route to continue operation.

1.3.8 Operator Panel

The operator panel can be used to turn on and off the server power, switch between

operation modes, and display system status information.