IBM DS3200 Storage Subsystem manual Same enclosure speed setting

Table 5. Troubleshooting (continued)

Problem
indicator	Component	Possible cause	Possible solutions
Green LED is	Drives	The DS3200 was	Perform one of the following
flashing slowly		not powered-on, or	actions:
(once every 2		all SAS connections	v Power-on the storage
seconds)		between the storage	subsystem.
		expansion
			v Make sure that the SAS
		enclosures and the
			connections between the
		DS3200 storage
			storage expansion enclosures
		subsystem have
			and the DS3200 storage
		failed.
			subsystem are made.
			v Make sure that all the storage
			expansion enclosures in the
			same channel pair have the
			same enclosure speed setting.
Intermittent or	Some or all	Defective ac power	Check the ac power source.
sporadic power	components	source or incorrectly	Reseat all installed power cords
loss to the storage		connected power	and power supplies. If applicable,
subsystem		cable	check the power components
			(power-supply units or
			uninterruptible power supply).
			Replace defective power cords.
		Power supply failure	Check the fault LED on the
			power supply. If the LED is lit,
			replace the failed component.
		Midplane failure	Replace the DS3200. Contact
			your IBM technical-support
			representative.
Unable to access	Drives	Incorrect storage	Make sure that the SAS cables
drives		subsystem ID	are undamaged and correctly
		settings	connected. Check the storage
			subsystem ID settings.
		RAID controller	Replace one or both RAID
		failure	controllers. Contact an IBM
			technical-support representative.
		Drive failure	Replace the failed drive or drives.
Random errors	Subsystem	Midplane failure	Replace the DS3200. Contact
			your IBM technical-support
			representative.

102System Storage DS3200 Storage Subsystem: Installation, User’s, and Maintenance Guide