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RAID Subsystem DVA-08K | Installation Manual Introduction | en 11
Bosch Security Systems F.01U.027.797 | V2 | 2008.08
• BBU module: A BBU provides the protective implementation to cached data; and, unless
deselected when purchasing the subsystems, is installed into the module slot located at
the upper left corner of the controller module.
• Cooling fan module: The redundant cooling fan module is used to ventilate the subsystem
and to reduce the temperature within the subsystem.
2.2.6 Backplane Board
An integrated backplane board separates the front and rear sections of the subsystem. The
PCB board provides traces for logic level signal traces and low voltage power paths. It con-
tains no user-serviceable components.
i
NOTICE!
Each of the power supplies on the sides of the enclosure houses one cooling fan module in a
removeable canister. When a power supply is removed, the cooling module is also removed.
Therefore, replace the power supply unit as soon as possible whenever it becomes necessary.
Cooling fan modules can be independently removed from the chassis without affecting PSU
operation.