HP Surestore Disk Array 12h - And FC60 Service Manual 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.
Do not swap a controller when the power is off!
Note
•
SCSI interface cables are not hot swappable.
Controller Enclosure Troubleshooting
238