System Components
3–7
Hitachi VSP User and Reference Guide
The fans on the front of the unit are intake fans that pull ambient air into
the unit. The fans on the rear assembly are exhaust fans that blow hot air
out of the unit. The two sets of fans work together to create a large airflow
through the unit. Either fan assembly is sufficient to cool the unit. Therefore
there is no time limit when changing disk drives, as long as either the front
or the rear fan assembly is in place.
WARNING: To prevent the unit from overheating, both the front and rear
fan assemblies should never be opened at the same time while the system
is running.
Figure 3-5 Drive chassis (fan door open)
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