User Service Guide, Fifth Edition - HP 9000 rp4410/4440

Replacing Dual Processor Modules
Dual processor modules are located on the top and bottom surfaces of the processor extender
board.
WARNING! Ensure that the system is powered off and all power sources have been disconnected
from the server before 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 can result in personal injury or damage to equipment.
CAUTION: Ensure that processor speed and cache size are identical for all processors. Failure
to observe this caution results in performance degradation or system failure.
The easiest way to ensure compatibility is to use dual processor modules with identical part
numbers.
Dual Processor Modules
HP 9000 rp4410 and rp4440 servers use dual processor modules. That is, each module contains
two processors. When only one processor is activated (a 1P/1C configuration of the HP 9000
rp4410 server), the second processor is installed but not enabled and is available for future use.
• The HP 9000 rp4410 server may contain one or two dual processor modules to provide 1/1C,
1P/2C, or 2P/2C configurations.
• The HP 9000 rp4440 server can contain one, two, three, or four dual processor modules to
provide 1P/2C, 2P/2C, 3P/2C, or 4P/2C configurations.
If fewer than the maximum number of dual processor modules are to be installed, the modules
must be installed in the appropriate connectors (see Table 6-3).
Processor Load Order
You can install up to four dual processor modules on the processor extender board, which is
located under the front cover in the top service bay, directly under the memory extender board.
If fewer than the maximum number of dual processor modules are to be installed (one in the HP
9000 rp4410 server or fewer than four in the HP 9000 rp4440 server), they must be installed in
the designated locations on the processor extender board.
The connectors slots or sockets on the processor extender board are labeled CPU0 through CPU3.
CPU0 and CPU1 connectors are located on the top of the processor extender board and CPU2
and CPU3 connectors are located on the bottom.
Table 6-3 describes the load sequence.
Table 6-3 Processor Load Order
SocketDual Processor ModuleServer
CPU01rp4410 or rp4440
CPU12rp4410 or rp4440
CPU23rp4440 only
CPU34rp4440 only
Replacing Dual Processor Modules 165