Compaq ProLiant 1000 ProLiant Server Troubleshooting Guide - Page 59
PCI or PCI-X Hot Plug, Memory
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Hardware Problems To check for failure if your server has redundant PPMs, briefly remove the appropriate access panel to inspect for the following: • If the failure LED is lit, then one of the voltage regulators on the redundant PPM has failed. The PPM is no longer redundant. The system will continue to run without redundancy, displaying a message from the Health Driver (if loaded on the system) to notify the user of the loss of redundancy. • If a PPM fails, the server is forced into a reset condition and may not power up. In either case, replace the PPM. PCI or PCI-X Hot Plug Some servers support PCI or PCI-X Hot Plug functionality, which provides the ability to remove, replace, upgrade, and add PCI or PCI-X expansion boards without the server being powered down. PCI or PCI-X Hot Plug device drivers and operating system support are required to enable this functionality. If you are having problems with PCI or PCI-X Hot Plug functionality, be sure that the proper drivers and support exist on your server and that you are following the requirements described in your server-specific user documentation for this technology. If errors are occurring, be sure that you are removing power to the slot using the PCI Hot Plug Utility (if supported by your server) or the PCI Hot Plug button before adding or removing any PCI hot plug devices. Memory Use Table 2-6 to troubleshoot memory problems. Be sure that the memory meets your server requirements and that it is installed as required by your server. Some requirements may include that memory banks cannot be partially populated, or that all memory within a memory bank must be the same size, type, and speed. Refer to your server-specific user documentation to determine if the memory is installed correctly. HP Servers Troubleshooting Guide 2-17