HP Smart Array Advanced Pack Software manual LED3 pattern LED4 pattern Interpretation

LED3 pattern	LED4 pattern	Interpretation
Off	Flashing (2 Hz)	The system is powered down, and the cache contains data that has not
		yet been written to the drives. Restore system power as soon as
		possible to prevent data loss.
		Data preservation time is extended any time that 3.3 V auxiliary
		power is available, as indicated by LED 2. In the absence of auxiliary
		power, battery power alone preserves the data. A fully-charged
		battery can normally preserve data for at least 2 days.
		The battery lifetime also depends on the cache module size. For more
		information, see the controller QuickSpecs on the HP website
		(http://www.hp.com).
Off	Double flash, then	The cache microcontroller is waiting for the host controller to
	pause	communicate.
Off	Flashing (1 Hz)	The battery pack is below the minimum charge level and is being
		charged. Features that require a battery (such as write cache, capacity
		expansion, stripe size migration, and RAID migration) are unavailable
		temporarily until charging is complete. The recharge process takes
		between 15 minutes and 2 hours, depending on the initial capacity of
		the battery.
Off	On	The battery pack is fully charged, and posted write data is stored in the
		cache.
Off	Off	The battery pack is fully charged, and no posted write data exists in
		the cache.
Flashing (1 Hz)	Flashing (1 Hz)	An alternating green and amber flashing pattern indicates that the
		cache microcontroller is executing from within its boot loader and
		receiving new flash code from the host controller.
On	—	A short circuit exists across the battery terminals or within the battery
		pack. BBWC features are disabled until the battery pack is replaced.
		The life expectancy of a battery pack is typically more than 3 years.
Flashing (1 Hz)	—	An open circuit exists across the battery terminals or within the battery
		pack. BBWC features are disabled until the battery pack is replaced.
		The life expectancy of a battery pack is typically more than 3 years.

Component identification 29