HP Surestore Disk Array FC60 HP SureStore E Disk Array FC60 Service Manual (A5 - Page 238

• Replacing the disk array controller module (including memory). • Replacing the controller enclosure midplane (controller card cage). Controller Servicing Notes Here are a few suggestions to consider when servicing disk array controller modules: • Always use proper precautions against electrostatic discharge when removing and handling disk array components. • Always read pertinent documentation. This includes software instructions on replacing failed interface components and documentation shipped with the replacement FRUs, particularly the kit instructions. Kit instructions often contain the most current information regarding servicing. • Always stop all I/O activity to the controller and associated disk modules before replacing the suspect or failed component unless alternate LVM links are properly configured. • Memory modules, controller modules, and the controller enclosure card cage assembly, which includes the midplane are not user replaceable. These components must be serviced by a qualified, trained service technician only. • A failed controller module can be hot swapped if the failed controller Is one of a redundant pair. • 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. • Remove the front cover to service the controller modules or to view the LEDs on each module. • Make sure that the new controller module has the same amount of memory as the one you are replacing. Note Do not swap a controller when the power is off! • SCSI interface cables are not hot swappable. 238 Controller Enclosure Troubleshooting