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10-1
CHAPTER
10
Fan Modules Replacement
The fan units move air currents into and out of the server. This chapter describes
how to remove and install the fan units. The information is organized into the
following topic:
■ “Fan Module Replacement” on page 10-1
10.1 Fan Module Replacement
The 172-mm fan module is the primary cooling system. The 172-mm fan module is
in both midrange servers. The 60-mm fan module is for additional cooling in the
SPARC Enterprise M4000 server. The fan modules are hot, active, or cold
replacement components. When using active replacement, only one fan module
should be replaced at a time to ensure redundancy. The fan backplanes are cold
replacement components.