HP XP P9500 Owner's Manual page 58

Figure 14 Drive chassis
Item Description
1 Fan (8 total)
3 Power Cable
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.
CAUTION:
never be opened at the same time while the system is running.
58 System components
To prevent the unit from overheating, both the front and rear fan assemblies should
Item Description
2 Fan assembly lock screw
(Loosen screw to open fan door.)
4 HDD Power Supply