IBM Partner Pavilion DS4100 manual Symptom-to-FRU index

Table 17. Symptom-to-FRU index

Problem
indicator	Component	Possible cause	Possible solutions
Amber LED on	Drive CRU	Drive failure	Replace the drive that has failed.
	Fan CRU	Fan failure	Replace the fan that has failed.
	RAID controller	RAID controller	If the RAID controller Fault LED
	Fault LED	failure	is on, replace the RAID controller.
			If the RAID controller has been
			placed offline by the user, use
			storage management software to
			place it online. If the controller
			failed, replace the RAID
			controller.
			Attention: In the DS4100
			single-controller storage server,
			the RAID controller Fault LED will
			not light in the event of a RAID
			controller failure or removal.
	Expansion or host	SFP port empty	No corrective action is needed if
	port bypass LED		this is a stand-alone storage
			server with no expansion units
			attached, and if the system is
			properly configured.
			Otherwise, check to make sure
			that the drive expansion unit is
			powered on and the fibre channel
			cables are attached properly.
		Fibre-channel	Connect the fibre-channel cable
		cable is not	to the enclosure port; check other
		attached to the	connections.
		expansion unit
		No incoming	Reattach the SFPs and
		signal detected	fibre-channel cables. Replace
			input and output SFPs or cables
			as necessary.
	Front panel	General system	Indicates that a Fault LED
		error	somewhere on the storage server
			has turned on. (Check for amber
			LEDs on CRUs.) Use DS4000
			Storage Manager software to
			diagnose server problems.
Amber LED is off	Power-supply	Power switch is	Turn on all power-supply power
and green LED off	CRU	turned off or ac	switches.
		power failure
Amber and green	Power-supply	Power supply	Replace the failed power-supply
LEDs on	CRU	failure	CRU.

112IBM TotalStorage DS4100 Storage Server: Installation, User’s, and Maintenance Guide