IBM DS3200 Storage Subsystem manual Esm

Table 5. Troubleshooting (continued)

Problem
indicator	Component	Possible cause	Possible solutions
Hard disk drive is	Several	Drive failure	Replace the failed drive or drives.
not visible in the	components
		SAS cable failed	Replace the SAS cable.
Storage Manager
		RAID controller	Replace RAID controller.
software
		failure
		Midplane failure	Replace the DS3200. Contact
			your IBM technical-support
			representative.
		A drive has an	Replace the drive.
		interface problem
		with the ESM or
		controller.
		Incorrect firmware	Make sure that the DS3200 has
		version	the correct firmware version. See
			“Software and hardware
			compatibility and upgrades” on
			page 11.
		In a dual-controller	Replace the failed controller and
		storage subsystem,	ESM.
		one controller has
		failed, and in the
		drive channel that
		originates from the
		other (functioning)
		controller, an ESM
		has failed.

Chapter 6. Solving problems 103