Chapter 4
Removing and Replacing Components
Processors
57
Processors
Processors are located on the top and bottom surfaces of the processor extender board.
WARNING
Ensure that the system is powered down and all power sources have been
disconnected from the server prior to removing or replacing a processor.
Voltages are present at various locations within the server whenever an AC power
source is connected. This voltage is present even when the main power switch is in
the off position.
Failure to observe this warning could result in personal injury or damage to
equipment.
Installing Processors
CAUTION
Ensure that the cache size is identical for all processors. Failure to observe this caution will
result in system failure.
Ensure that all processors are rated for use at the same speed. Failure to observe this caution
will result in performance degradation.
Processor Load Order
Processors are housed on the processor extender board located under the top cover in the top service bay. The
processor extender board can hold between one and four processors. CPU 0 and CPU 1 are located on the top
of the processor extender board and CPU 2 and CPU 3 are located on the bottom. Processors must be installed
in a specific order.
CAUTION
Do not modify the settings of the DIP switches located on the processor extender board. These
switches are for factory use. Failure to observe this caution will result in system failure.
Table 4-3
Processor Load Order
Processor
Socket
1
CPU 0
2
CPU 1
3
CPU 2
4
CPU 3