HP Surestore Disk Array FC60 HP SureStore E Disk Array FC60 Service Manual (A5 - Page 239

Troubleshooting • A controller fault may be due to a failed memory module. Memory Module Servicing Notes CAUTION Memory modules must be serviced by a trained service technician ONLY. Before replacing a failed SIMM or DIMM, remember the following tips: • Always use proper precautions against electrostatic discharge before removing and handling controller modules, SIMMs, and DIMMs. • Always use the same type and size of memory module to replace a failed module. • The Fault LED on the affected controller module will turn ON if one of its memory modules fail. This is the same LED used to indicate a controller failure. The controllers do not contain an LED or other mechanism for identifying individual memory module failures. The following information should help you determine if the problem is memory- or controller-related: • Remove the failed controller module and replace a failed memory module while the other controller module is running. • If cache mirroring is enabled and one controller module fails, the remaining controller module will assume operation of the disk array, but write cache will be disabled. Controller Enclosure Troubleshooting 239