HP 9000 rp4410-4 User Service Guide, Fifth Edition - HP 9000 rp4410/4440 - Page 165

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 Server rp4410 or rp4440 rp4410 or rp4440 rp4440 only rp4440 only Dual Processor Module 1 2 3 4 Socket CPU0 CPU1 CPU2 CPU3 Replacing Dual Processor Modules 165