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Motherboard
The motherboard contains the various disk controllers and other electronics
necessary to control the server's functions. It contains the memory and first
two processors as well as PCI and EISA expansion slots.
Figure 1-4 Motherboard in the Electronics chamber
Uninterruptible Power Supply
This power supply is designed to keep your system powered up for a
limited period of time after, or during a power failure. It is equipped
with an on-line removable battery pack and will give you enough time to
shutdown the network and the server without losing valuable data. The
power supply, including the battery pack, occupies the entire lower level of
the server chassis.
The UPS will maintain power to the system for a minimum of 4 minutes in
a fully-laden system, i.e. equipped with 20 hard disk drives. This time will be
longer in a system equipped with fewer drives.
Note
Note
In the event that the mains power fails, the LCD will display a countdown of the
number of seconds remaining until the battery pack is fully discharged. The
Event Manager User's Guide contains more details about this feature.
Cooling Fans
Your computer is equipped with six thermally controlled and alarmed
cooling fans, three on each side of the machine. These will prevent
overheating by maintaining an appropriate temperature inside the system.
In addition there are two cooling fans within the UPS unit.
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